Home / 7,089.28-10,630.80-2,929.12

Finding the Fourth Proportional to 7,089.28, 10,630.80 and 2,929.12

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Solution

The fourth proportional to 7,089.28, 10,630.80 and 2,929.12 is: 4,392.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,089.28 : 10,630.80 = 2,929.12 : x
  2. Step 2: Convert to fraction form
    7,089.28/10,630.80 = 2,929.12/x
  3. Step 3: Cross multiply
    7,089.28x = 10,630.80 × 2,929.12
  4. Step 4: Simplify right side
    7,089.28x = 31,138,888.90
  5. Step 5: Solve for x
    x = 31,138,888.90/7,089.28
  6. Step 6: Final answer
    x = 4,392.39

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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.