Home / 8,478.57-11,700.30-4,701.75

Finding the Fourth Proportional to 8,478.57, 11,700.30 and 4,701.75

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Solution

The fourth proportional to 8,478.57, 11,700.30 and 4,701.75 is: 6,488.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,478.57 : 11,700.30 = 4,701.75 : x
  2. Step 2: Convert to fraction form
    8,478.57/11,700.30 = 4,701.75/x
  3. Step 3: Cross multiply
    8,478.57x = 11,700.30 × 4,701.75
  4. Step 4: Simplify right side
    8,478.57x = 55,011,832.83
  5. Step 5: Solve for x
    x = 55,011,832.83/8,478.57
  6. Step 6: Final answer
    x = 6,488.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.