Home / 7,125.72-10,688.58-1,931.46

Finding the Fourth Proportional to 7,125.72, 10,688.58 and 1,931.46

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Solution

The fourth proportional to 7,125.72, 10,688.58 and 1,931.46 is: 2,897.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,125.72 : 10,688.58 = 1,931.46 : x
  2. Step 2: Convert to fraction form
    7,125.72/10,688.58 = 1,931.46/x
  3. Step 3: Cross multiply
    7,125.72x = 10,688.58 × 1,931.46
  4. Step 4: Simplify right side
    7,125.72x = 20,644,564.73
  5. Step 5: Solve for x
    x = 20,644,564.73/7,125.72
  6. Step 6: Final answer
    x = 2,897.19

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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.