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Finding the Fourth Proportional to 7,489.58, 10,339.58 and 5,807.20

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Solution

The fourth proportional to 7,489.58, 10,339.58 and 5,807.20 is: 8,017.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,489.58 : 10,339.58 = 5,807.20 : x
  2. Step 2: Convert to fraction form
    7,489.58/10,339.58 = 5,807.20/x
  3. Step 3: Cross multiply
    7,489.58x = 10,339.58 × 5,807.20
  4. Step 4: Simplify right side
    7,489.58x = 60,044,008.98
  5. Step 5: Solve for x
    x = 60,044,008.98/7,489.58
  6. Step 6: Final answer
    x = 8,017.01

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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.