Home / 4,458.20-6,689.70-1,861.40

Finding the Fourth Proportional to 4,458.20, 6,689.70 and 1,861.40

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Solution

The fourth proportional to 4,458.20, 6,689.70 and 1,861.40 is: 2,793.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,458.20 : 6,689.70 = 1,861.40 : x
  2. Step 2: Convert to fraction form
    4,458.20/6,689.70 = 1,861.40/x
  3. Step 3: Cross multiply
    4,458.20x = 6,689.70 × 1,861.40
  4. Step 4: Simplify right side
    4,458.20x = 12,452,207.58
  5. Step 5: Solve for x
    x = 12,452,207.58/4,458.20
  6. Step 6: Final answer
    x = 2,793.10

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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.