Home / 4,280.64-6,421.50-1,357.90

Finding the Fourth Proportional to 4,280.64, 6,421.50 and 1,357.90

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Solution

The fourth proportional to 4,280.64, 6,421.50 and 1,357.90 is: 2,037.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,280.64 : 6,421.50 = 1,357.90 : x
  2. Step 2: Convert to fraction form
    4,280.64/6,421.50 = 1,357.90/x
  3. Step 3: Cross multiply
    4,280.64x = 6,421.50 × 1,357.90
  4. Step 4: Simplify right side
    4,280.64x = 8,719,754.85
  5. Step 5: Solve for x
    x = 8,719,754.85/4,280.64
  6. Step 6: Final answer
    x = 2,037.02

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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.