Home / 1,866.34-2,575.45-1,120.15

Finding the Fourth Proportional to 1,866.34, 2,575.45 and 1,120.15

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Solution

The fourth proportional to 1,866.34, 2,575.45 and 1,120.15 is: 1,545.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,866.34 : 2,575.45 = 1,120.15 : x
  2. Step 2: Convert to fraction form
    1,866.34/2,575.45 = 1,120.15/x
  3. Step 3: Cross multiply
    1,866.34x = 2,575.45 × 1,120.15
  4. Step 4: Simplify right side
    1,866.34x = 2,884,890.32
  5. Step 5: Solve for x
    x = 2,884,890.32/1,866.34
  6. Step 6: Final answer
    x = 1,545.75

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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.