Home / 1,545.03-2,312.69-1,105.20

Finding the Fourth Proportional to 1,545.03, 2,312.69 and 1,105.20

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Solution

The fourth proportional to 1,545.03, 2,312.69 and 1,105.20 is: 1,654.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,545.03 : 2,312.69 = 1,105.20 : x
  2. Step 2: Convert to fraction form
    1,545.03/2,312.69 = 1,105.20/x
  3. Step 3: Cross multiply
    1,545.03x = 2,312.69 × 1,105.20
  4. Step 4: Simplify right side
    1,545.03x = 2,555,979.46
  5. Step 5: Solve for x
    x = 2,555,979.46/1,545.03
  6. Step 6: Final answer
    x = 1,654.32

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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.