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Finding the Fourth Proportional to 28,265.04, 42,397.90 and 7,205.04

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Solution

The fourth proportional to 28,265.04, 42,397.90 and 7,205.04 is: 10,807.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,265.04 : 42,397.90 = 7,205.04 : x
  2. Step 2: Convert to fraction form
    28,265.04/42,397.90 = 7,205.04/x
  3. Step 3: Cross multiply
    28,265.04x = 42,397.90 × 7,205.04
  4. Step 4: Simplify right side
    28,265.04x = 305,478,547.40
  5. Step 5: Solve for x
    x = 305,478,547.40/28,265.04
  6. Step 6: Final answer
    x = 10,807.65

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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.