Home / 7,972.90-10,991.19-5,607.70

Finding the Fourth Proportional to 7,972.90, 10,991.19 and 5,607.70

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Solution

The fourth proportional to 7,972.90, 10,991.19 and 5,607.70 is: 7,730.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,972.90 : 10,991.19 = 5,607.70 : x
  2. Step 2: Convert to fraction form
    7,972.90/10,991.19 = 5,607.70/x
  3. Step 3: Cross multiply
    7,972.90x = 10,991.19 × 5,607.70
  4. Step 4: Simplify right side
    7,972.90x = 61,635,289.71
  5. Step 5: Solve for x
    x = 61,635,289.71/7,972.90
  6. Step 6: Final answer
    x = 7,730.60

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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.