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Finding the Fourth Proportional to 2,945.17, 4,417.76 and 753.90

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Solution

The fourth proportional to 2,945.17, 4,417.76 and 753.90 is: 1,130.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,945.17 : 4,417.76 = 753.90 : x
  2. Step 2: Convert to fraction form
    2,945.17/4,417.76 = 753.90/x
  3. Step 3: Cross multiply
    2,945.17x = 4,417.76 × 753.90
  4. Step 4: Simplify right side
    2,945.17x = 3,330,549.26
  5. Step 5: Solve for x
    x = 3,330,549.26/2,945.17
  6. Step 6: Final answer
    x = 1,130.85

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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.