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Finding the Fourth Proportional to 1,503.70, 2,254.04 and 853.08

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Solution

The fourth proportional to 1,503.70, 2,254.04 and 853.08 is: 1,278.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,503.70 : 2,254.04 = 853.08 : x
  2. Step 2: Convert to fraction form
    1,503.70/2,254.04 = 853.08/x
  3. Step 3: Cross multiply
    1,503.70x = 2,254.04 × 853.08
  4. Step 4: Simplify right side
    1,503.70x = 1,922,876.44
  5. Step 5: Solve for x
    x = 1,922,876.44/1,503.70
  6. Step 6: Final answer
    x = 1,278.76

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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.