Home / 2,154.57-2,972.85-1,557.93

Finding the Fourth Proportional to 2,154.57, 2,972.85 and 1,557.93

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Solution

The fourth proportional to 2,154.57, 2,972.85 and 1,557.93 is: 2,149.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.57 : 2,972.85 = 1,557.93 : x
  2. Step 2: Convert to fraction form
    2,154.57/2,972.85 = 1,557.93/x
  3. Step 3: Cross multiply
    2,154.57x = 2,972.85 × 1,557.93
  4. Step 4: Simplify right side
    2,154.57x = 4,631,492.20
  5. Step 5: Solve for x
    x = 4,631,492.20/2,154.57
  6. Step 6: Final answer
    x = 2,149.61

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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.