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Finding the Fourth Proportional to 7,175.20, 9,855.08 and 7,002.40

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Solution

The fourth proportional to 7,175.20, 9,855.08 and 7,002.40 is: 9,617.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,175.20 : 9,855.08 = 7,002.40 : x
  2. Step 2: Convert to fraction form
    7,175.20/9,855.08 = 7,002.40/x
  3. Step 3: Cross multiply
    7,175.20x = 9,855.08 × 7,002.40
  4. Step 4: Simplify right side
    7,175.20x = 69,009,212.19
  5. Step 5: Solve for x
    x = 69,009,212.19/7,175.20
  6. Step 6: Final answer
    x = 9,617.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.