Home / 2,223.18-3,068.15-1,278.99

Finding the Fourth Proportional to 2,223.18, 3,068.15 and 1,278.99

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Solution

The fourth proportional to 2,223.18, 3,068.15 and 1,278.99 is: 1,765.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,223.18 : 3,068.15 = 1,278.99 : x
  2. Step 2: Convert to fraction form
    2,223.18/3,068.15 = 1,278.99/x
  3. Step 3: Cross multiply
    2,223.18x = 3,068.15 × 1,278.99
  4. Step 4: Simplify right side
    2,223.18x = 3,924,126.77
  5. Step 5: Solve for x
    x = 3,924,126.77/2,223.18
  6. Step 6: Final answer
    x = 1,765.10

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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.