Home / 8,430.48-12,645.72-2,587.09

Finding the Fourth Proportional to 8,430.48, 12,645.72 and 2,587.09

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Solution

The fourth proportional to 8,430.48, 12,645.72 and 2,587.09 is: 3,880.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,430.48 : 12,645.72 = 2,587.09 : x
  2. Step 2: Convert to fraction form
    8,430.48/12,645.72 = 2,587.09/x
  3. Step 3: Cross multiply
    8,430.48x = 12,645.72 × 2,587.09
  4. Step 4: Simplify right side
    8,430.48x = 32,715,607.85
  5. Step 5: Solve for x
    x = 32,715,607.85/8,430.48
  6. Step 6: Final answer
    x = 3,880.63

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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.