Home / 4,142.40-5,715-3,701.76

Finding the Fourth Proportional to 4,142.40, 5,715 and 3,701.76

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Solution

The fourth proportional to 4,142.40, 5,715 and 3,701.76 is: 5,107.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,142.40 : 5,715 = 3,701.76 : x
  2. Step 2: Convert to fraction form
    4,142.40/5,715 = 3,701.76/x
  3. Step 3: Cross multiply
    4,142.40x = 5,715 × 3,701.76
  4. Step 4: Simplify right side
    4,142.40x = 21,155,558.40
  5. Step 5: Solve for x
    x = 21,155,558.40/4,142.40
  6. Step 6: Final answer
    x = 5,107.08

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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.