Home / 1,772.87-2,656.13-1,478.57

Finding the Fourth Proportional to 1,772.87, 2,656.13 and 1,478.57

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Solution

The fourth proportional to 1,772.87, 2,656.13 and 1,478.57 is: 2,215.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,772.87 : 2,656.13 = 1,478.57 : x
  2. Step 2: Convert to fraction form
    1,772.87/2,656.13 = 1,478.57/x
  3. Step 3: Cross multiply
    1,772.87x = 2,656.13 × 1,478.57
  4. Step 4: Simplify right side
    1,772.87x = 3,927,253.46
  5. Step 5: Solve for x
    x = 3,927,253.46/1,772.87
  6. Step 6: Final answer
    x = 2,215.20

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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.