Home / 5,142.06-7,711.48-1,854.72

Finding the Fourth Proportional to 5,142.06, 7,711.48 and 1,854.72

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Solution

The fourth proportional to 5,142.06, 7,711.48 and 1,854.72 is: 2,781.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,142.06 : 7,711.48 = 1,854.72 : x
  2. Step 2: Convert to fraction form
    5,142.06/7,711.48 = 1,854.72/x
  3. Step 3: Cross multiply
    5,142.06x = 7,711.48 × 1,854.72
  4. Step 4: Simplify right side
    5,142.06x = 14,302,636.19
  5. Step 5: Solve for x
    x = 14,302,636.19/5,142.06
  6. Step 6: Final answer
    x = 2,781.50

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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.