Home / 2,154.50-2,972.75-1,269.98

Finding the Fourth Proportional to 2,154.50, 2,972.75 and 1,269.98

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Solution

The fourth proportional to 2,154.50, 2,972.75 and 1,269.98 is: 1,752.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.50 : 2,972.75 = 1,269.98 : x
  2. Step 2: Convert to fraction form
    2,154.50/2,972.75 = 1,269.98/x
  3. Step 3: Cross multiply
    2,154.50x = 2,972.75 × 1,269.98
  4. Step 4: Simplify right side
    2,154.50x = 3,775,326.70
  5. Step 5: Solve for x
    x = 3,775,326.70/2,154.50
  6. Step 6: Final answer
    x = 1,752.30

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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.