Home / 2,385.61-3,292.14-1,391.56

Finding the Fourth Proportional to 2,385.61, 3,292.14 and 1,391.56

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Solution

The fourth proportional to 2,385.61, 3,292.14 and 1,391.56 is: 1,920.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,385.61 : 3,292.14 = 1,391.56 : x
  2. Step 2: Convert to fraction form
    2,385.61/3,292.14 = 1,391.56/x
  3. Step 3: Cross multiply
    2,385.61x = 3,292.14 × 1,391.56
  4. Step 4: Simplify right side
    2,385.61x = 4,581,210.34
  5. Step 5: Solve for x
    x = 4,581,210.34/2,385.61
  6. Step 6: Final answer
    x = 1,920.35

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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.