Home / 1,545.47-2,134.61-1,125.15

Finding the Fourth Proportional to 1,545.47, 2,134.61 and 1,125.15

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Solution

The fourth proportional to 1,545.47, 2,134.61 and 1,125.15 is: 1,554.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,545.47 : 2,134.61 = 1,125.15 : x
  2. Step 2: Convert to fraction form
    1,545.47/2,134.61 = 1,125.15/x
  3. Step 3: Cross multiply
    1,545.47x = 2,134.61 × 1,125.15
  4. Step 4: Simplify right side
    1,545.47x = 2,401,756.44
  5. Step 5: Solve for x
    x = 2,401,756.44/1,545.47
  6. Step 6: Final answer
    x = 1,554.06

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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.