Home / 7,125.28-10,688-1,931.04

Finding the Fourth Proportional to 7,125.28, 10,688 and 1,931.04

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Solution

The fourth proportional to 7,125.28, 10,688 and 1,931.04 is: 2,896.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,125.28 : 10,688 = 1,931.04 : x
  2. Step 2: Convert to fraction form
    7,125.28/10,688 = 1,931.04/x
  3. Step 3: Cross multiply
    7,125.28x = 10,688 × 1,931.04
  4. Step 4: Simplify right side
    7,125.28x = 20,638,955.52
  5. Step 5: Solve for x
    x = 20,638,955.52/7,125.28
  6. Step 6: Final answer
    x = 2,896.58

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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.