Home / 6,312.80-8,711.28-3,518.24

Finding the Fourth Proportional to 6,312.80, 8,711.28 and 3,518.24

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Solution

The fourth proportional to 6,312.80, 8,711.28 and 3,518.24 is: 4,854.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,312.80 : 8,711.28 = 3,518.24 : x
  2. Step 2: Convert to fraction form
    6,312.80/8,711.28 = 3,518.24/x
  3. Step 3: Cross multiply
    6,312.80x = 8,711.28 × 3,518.24
  4. Step 4: Simplify right side
    6,312.80x = 30,648,373.75
  5. Step 5: Solve for x
    x = 30,648,373.75/6,312.80
  6. Step 6: Final answer
    x = 4,854.96

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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.