Home / 1,650.80-2,278.08-904.76

Finding the Fourth Proportional to 1,650.80, 2,278.08 and 904.76

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Solution

The fourth proportional to 1,650.80, 2,278.08 and 904.76 is: 1,248.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,650.80 : 2,278.08 = 904.76 : x
  2. Step 2: Convert to fraction form
    1,650.80/2,278.08 = 904.76/x
  3. Step 3: Cross multiply
    1,650.80x = 2,278.08 × 904.76
  4. Step 4: Simplify right side
    1,650.80x = 2,061,104.27
  5. Step 5: Solve for x
    x = 2,061,104.27/1,650.80
  6. Step 6: Final answer
    x = 1,248.55

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1.5x scale

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.