Home / 5,358.20-8,037.90-1,660.40

Finding the Fourth Proportional to 5,358.20, 8,037.90 and 1,660.40

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Solution

The fourth proportional to 5,358.20, 8,037.90 and 1,660.40 is: 2,490.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,358.20 : 8,037.90 = 1,660.40 : x
  2. Step 2: Convert to fraction form
    5,358.20/8,037.90 = 1,660.40/x
  3. Step 3: Cross multiply
    5,358.20x = 8,037.90 × 1,660.40
  4. Step 4: Simplify right side
    5,358.20x = 13,346,129.16
  5. Step 5: Solve for x
    x = 13,346,129.16/5,358.20
  6. Step 6: Final answer
    x = 2,490.79

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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.