Home / 1,545.30-2,130.08-1,170.77

Finding the Fourth Proportional to 1,545.30, 2,130.08 and 1,170.77

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Solution

The fourth proportional to 1,545.30, 2,130.08 and 1,170.77 is: 1,613.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,545.30 : 2,130.08 = 1,170.77 : x
  2. Step 2: Convert to fraction form
    1,545.30/2,130.08 = 1,170.77/x
  3. Step 3: Cross multiply
    1,545.30x = 2,130.08 × 1,170.77
  4. Step 4: Simplify right side
    1,545.30x = 2,493,842.01
  5. Step 5: Solve for x
    x = 2,493,842.01/1,545.30
  6. Step 6: Final answer
    x = 1,613.82

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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.