Home / 7,088.80-10,631.40-2,925.40

Finding the Fourth Proportional to 7,088.80, 10,631.40 and 2,925.40

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Solution

The fourth proportional to 7,088.80, 10,631.40 and 2,925.40 is: 4,387.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,088.80 : 10,631.40 = 2,925.40 : x
  2. Step 2: Convert to fraction form
    7,088.80/10,631.40 = 2,925.40/x
  3. Step 3: Cross multiply
    7,088.80x = 10,631.40 × 2,925.40
  4. Step 4: Simplify right side
    7,088.80x = 31,101,097.56
  5. Step 5: Solve for x
    x = 31,101,097.56/7,088.80
  6. Step 6: Final answer
    x = 4,387.36

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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.