Home / 5,142.96-7,713.40-1,445.36

Finding the Fourth Proportional to 5,142.96, 7,713.40 and 1,445.36

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Solution

The fourth proportional to 5,142.96, 7,713.40 and 1,445.36 is: 2,167.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,142.96 : 7,713.40 = 1,445.36 : x
  2. Step 2: Convert to fraction form
    5,142.96/7,713.40 = 1,445.36/x
  3. Step 3: Cross multiply
    5,142.96x = 7,713.40 × 1,445.36
  4. Step 4: Simplify right side
    5,142.96x = 11,148,639.82
  5. Step 5: Solve for x
    x = 11,148,639.82/5,142.96
  6. Step 6: Final answer
    x = 2,167.75

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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.