Home / 6,472.16-9,708.40-1,855.20

Finding the Fourth Proportional to 6,472.16, 9,708.40 and 1,855.20

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Solution

The fourth proportional to 6,472.16, 9,708.40 and 1,855.20 is: 2,782.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,472.16 : 9,708.40 = 1,855.20 : x
  2. Step 2: Convert to fraction form
    6,472.16/9,708.40 = 1,855.20/x
  3. Step 3: Cross multiply
    6,472.16x = 9,708.40 × 1,855.20
  4. Step 4: Simplify right side
    6,472.16x = 18,011,023.68
  5. Step 5: Solve for x
    x = 18,011,023.68/6,472.16
  6. Step 6: Final answer
    x = 2,782.85

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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.