Home / 8,459.93-12,688.63-2,220.05

Finding the Fourth Proportional to 8,459.93, 12,688.63 and 2,220.05

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Solution

The fourth proportional to 8,459.93, 12,688.63 and 2,220.05 is: 3,329.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,459.93 : 12,688.63 = 2,220.05 : x
  2. Step 2: Convert to fraction form
    8,459.93/12,688.63 = 2,220.05/x
  3. Step 3: Cross multiply
    8,459.93x = 12,688.63 × 2,220.05
  4. Step 4: Simplify right side
    8,459.93x = 28,169,393.03
  5. Step 5: Solve for x
    x = 28,169,393.03/8,459.93
  6. Step 6: Final answer
    x = 3,329.74

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.