Home / 5,143.60-7,715.52-1,856.96

Finding the Fourth Proportional to 5,143.60, 7,715.52 and 1,856.96

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Solution

The fourth proportional to 5,143.60, 7,715.52 and 1,856.96 is: 2,785.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.60 : 7,715.52 = 1,856.96 : x
  2. Step 2: Convert to fraction form
    5,143.60/7,715.52 = 1,856.96/x
  3. Step 3: Cross multiply
    5,143.60x = 7,715.52 × 1,856.96
  4. Step 4: Simplify right side
    5,143.60x = 14,327,412.02
  5. Step 5: Solve for x
    x = 14,327,412.02/5,143.60
  6. Step 6: Final answer
    x = 2,785.48

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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.