Home / 7,126.38-10,688.76-1,931.04

Finding the Fourth Proportional to 7,126.38, 10,688.76 and 1,931.04

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Solution

The fourth proportional to 7,126.38, 10,688.76 and 1,931.04 is: 2,896.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,126.38 : 10,688.76 = 1,931.04 : x
  2. Step 2: Convert to fraction form
    7,126.38/10,688.76 = 1,931.04/x
  3. Step 3: Cross multiply
    7,126.38x = 10,688.76 × 1,931.04
  4. Step 4: Simplify right side
    7,126.38x = 20,640,423.11
  5. Step 5: Solve for x
    x = 20,640,423.11/7,126.38
  6. Step 6: Final answer
    x = 2,896.34

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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.