Home / 2,947.10-4,420.85-999.45

Finding the Fourth Proportional to 2,947.10, 4,420.85 and 999.45

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Solution

The fourth proportional to 2,947.10, 4,420.85 and 999.45 is: 1,499.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.10 : 4,420.85 = 999.45 : x
  2. Step 2: Convert to fraction form
    2,947.10/4,420.85 = 999.45/x
  3. Step 3: Cross multiply
    2,947.10x = 4,420.85 × 999.45
  4. Step 4: Simplify right side
    2,947.10x = 4,418,418.53
  5. Step 5: Solve for x
    x = 4,418,418.53/2,947.10
  6. Step 6: Final answer
    x = 1,499.24

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Similar ratio
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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.