Home / 8,420.39-11,621.19-4,836.47

Finding the Fourth Proportional to 8,420.39, 11,621.19 and 4,836.47

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Solution

The fourth proportional to 8,420.39, 11,621.19 and 4,836.47 is: 6,674.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420.39 : 11,621.19 = 4,836.47 : x
  2. Step 2: Convert to fraction form
    8,420.39/11,621.19 = 4,836.47/x
  3. Step 3: Cross multiply
    8,420.39x = 11,621.19 × 4,836.47
  4. Step 4: Simplify right side
    8,420.39x = 56,205,536.80
  5. Step 5: Solve for x
    x = 56,205,536.80/8,420.39
  6. Step 6: Final answer
    x = 6,674.93

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.