Home / 1,126.20-1,545.88-999.08

Finding the Fourth Proportional to 1,126.20, 1,545.88 and 999.08

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Solution

The fourth proportional to 1,126.20, 1,545.88 and 999.08 is: 1,371.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.20 : 1,545.88 = 999.08 : x
  2. Step 2: Convert to fraction form
    1,126.20/1,545.88 = 999.08/x
  3. Step 3: Cross multiply
    1,126.20x = 1,545.88 × 999.08
  4. Step 4: Simplify right side
    1,126.20x = 1,544,457.79
  5. Step 5: Solve for x
    x = 1,544,457.79/1,126.20
  6. Step 6: Final answer
    x = 1,371.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.