Home / 10,144.80-15,218.64-3,125.40

Finding the Fourth Proportional to 10,144.80, 15,218.64 and 3,125.40

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Solution

The fourth proportional to 10,144.80, 15,218.64 and 3,125.40 is: 4,688.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,144.80 : 15,218.64 = 3,125.40 : x
  2. Step 2: Convert to fraction form
    10,144.80/15,218.64 = 3,125.40/x
  3. Step 3: Cross multiply
    10,144.80x = 15,218.64 × 3,125.40
  4. Step 4: Simplify right side
    10,144.80x = 47,564,337.46
  5. Step 5: Solve for x
    x = 47,564,337.46/10,144.80
  6. Step 6: Final answer
    x = 4,688.54

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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.