Home / 1,650.96-2,278.20-904.90

Finding the Fourth Proportional to 1,650.96, 2,278.20 and 904.90

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Solution

The fourth proportional to 1,650.96, 2,278.20 and 904.90 is: 1,248.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,650.96 : 2,278.20 = 904.90 : x
  2. Step 2: Convert to fraction form
    1,650.96/2,278.20 = 904.90/x
  3. Step 3: Cross multiply
    1,650.96x = 2,278.20 × 904.90
  4. Step 4: Simplify right side
    1,650.96x = 2,061,543.18
  5. Step 5: Solve for x
    x = 2,061,543.18/1,650.96
  6. Step 6: Final answer
    x = 1,248.69

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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.