Home / 2,617.20-3,925.53-885.78

Finding the Fourth Proportional to 2,617.20, 3,925.53 and 885.78

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Solution

The fourth proportional to 2,617.20, 3,925.53 and 885.78 is: 1,328.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,617.20 : 3,925.53 = 885.78 : x
  2. Step 2: Convert to fraction form
    2,617.20/3,925.53 = 885.78/x
  3. Step 3: Cross multiply
    2,617.20x = 3,925.53 × 885.78
  4. Step 4: Simplify right side
    2,617.20x = 3,477,155.96
  5. Step 5: Solve for x
    x = 3,477,155.96/2,617.20
  6. Step 6: Final answer
    x = 1,328.58

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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.