Home / 2,788.60-4,176.15-1,487.20

Finding the Fourth Proportional to 2,788.60, 4,176.15 and 1,487.20

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Solution

The fourth proportional to 2,788.60, 4,176.15 and 1,487.20 is: 2,227.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,788.60 : 4,176.15 = 1,487.20 : x
  2. Step 2: Convert to fraction form
    2,788.60/4,176.15 = 1,487.20/x
  3. Step 3: Cross multiply
    2,788.60x = 4,176.15 × 1,487.20
  4. Step 4: Simplify right side
    2,788.60x = 6,210,770.28
  5. Step 5: Solve for x
    x = 6,210,770.28/2,788.60
  6. Step 6: Final answer
    x = 2,227.20

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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.