Home / 2,377.78-3,281.28-1,315.64

Finding the Fourth Proportional to 2,377.78, 3,281.28 and 1,315.64

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Solution

The fourth proportional to 2,377.78, 3,281.28 and 1,315.64 is: 1,815.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,377.78 : 3,281.28 = 1,315.64 : x
  2. Step 2: Convert to fraction form
    2,377.78/3,281.28 = 1,315.64/x
  3. Step 3: Cross multiply
    2,377.78x = 3,281.28 × 1,315.64
  4. Step 4: Simplify right side
    2,377.78x = 4,316,970.10
  5. Step 5: Solve for x
    x = 4,316,970.10/2,377.78
  6. Step 6: Final answer
    x = 1,815.55

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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.