Home / 8,434.05-11,639.12-4,657.20

Finding the Fourth Proportional to 8,434.05, 11,639.12 and 4,657.20

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Solution

The fourth proportional to 8,434.05, 11,639.12 and 4,657.20 is: 6,427.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,434.05 : 11,639.12 = 4,657.20 : x
  2. Step 2: Convert to fraction form
    8,434.05/11,639.12 = 4,657.20/x
  3. Step 3: Cross multiply
    8,434.05x = 11,639.12 × 4,657.20
  4. Step 4: Simplify right side
    8,434.05x = 54,205,686.38
  5. Step 5: Solve for x
    x = 54,205,686.38/8,434.05
  6. Step 6: Final answer
    x = 6,427.01

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Half 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.