Home / 2,154.90-3,225.60-1,372.17

Finding the Fourth Proportional to 2,154.90, 3,225.60 and 1,372.17

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Solution

The fourth proportional to 2,154.90, 3,225.60 and 1,372.17 is: 2,053.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.90 : 3,225.60 = 1,372.17 : x
  2. Step 2: Convert to fraction form
    2,154.90/3,225.60 = 1,372.17/x
  3. Step 3: Cross multiply
    2,154.90x = 3,225.60 × 1,372.17
  4. Step 4: Simplify right side
    2,154.90x = 4,426,071.55
  5. Step 5: Solve for x
    x = 4,426,071.55/2,154.90
  6. Step 6: Final answer
    x = 2,053.96

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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.