Home / 2,117.52-3,177.19-885.21

Finding the Fourth Proportional to 2,117.52, 3,177.19 and 885.21

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Solution

The fourth proportional to 2,117.52, 3,177.19 and 885.21 is: 1,328.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.52 : 3,177.19 = 885.21 : x
  2. Step 2: Convert to fraction form
    2,117.52/3,177.19 = 885.21/x
  3. Step 3: Cross multiply
    2,117.52x = 3,177.19 × 885.21
  4. Step 4: Simplify right side
    2,117.52x = 2,812,480.36
  5. Step 5: Solve for x
    x = 2,812,480.36/2,117.52
  6. Step 6: Final answer
    x = 1,328.20

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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.