Home / 4,289.76-5,919.12-2,520.72

Finding the Fourth Proportional to 4,289.76, 5,919.12 and 2,520.72

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Solution

The fourth proportional to 4,289.76, 5,919.12 and 2,520.72 is: 3,478.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,289.76 : 5,919.12 = 2,520.72 : x
  2. Step 2: Convert to fraction form
    4,289.76/5,919.12 = 2,520.72/x
  3. Step 3: Cross multiply
    4,289.76x = 5,919.12 × 2,520.72
  4. Step 4: Simplify right side
    4,289.76x = 14,920,444.17
  5. Step 5: Solve for x
    x = 14,920,444.17/4,289.76
  6. Step 6: Final answer
    x = 3,478.15

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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.