Home / 2,947.11-4,420.66-999.33

Finding the Fourth Proportional to 2,947.11, 4,420.66 and 999.33

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Solution

The fourth proportional to 2,947.11, 4,420.66 and 999.33 is: 1,498.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.11 : 4,420.66 = 999.33 : x
  2. Step 2: Convert to fraction form
    2,947.11/4,420.66 = 999.33/x
  3. Step 3: Cross multiply
    2,947.11x = 4,420.66 × 999.33
  4. Step 4: Simplify right side
    2,947.11x = 4,417,680.96
  5. Step 5: Solve for x
    x = 4,417,680.96/2,947.11
  6. Step 6: Final answer
    x = 1,498.99

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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.