Home / 3,378.50-5,068.28-1,187.30

Finding the Fourth Proportional to 3,378.50, 5,068.28 and 1,187.30

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Solution

The fourth proportional to 3,378.50, 5,068.28 and 1,187.30 is: 1,781.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,378.50 : 5,068.28 = 1,187.30 : x
  2. Step 2: Convert to fraction form
    3,378.50/5,068.28 = 1,187.30/x
  3. Step 3: Cross multiply
    3,378.50x = 5,068.28 × 1,187.30
  4. Step 4: Simplify right side
    3,378.50x = 6,017,546.47
  5. Step 5: Solve for x
    x = 6,017,546.47/3,378.50
  6. Step 6: Final answer
    x = 1,781.13

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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.