Home / 2,947.04-4,420.20-999.20

Finding the Fourth Proportional to 2,947.04, 4,420.20 and 999.20

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Solution

The fourth proportional to 2,947.04, 4,420.20 and 999.20 is: 1,498.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.04 : 4,420.20 = 999.20 : x
  2. Step 2: Convert to fraction form
    2,947.04/4,420.20 = 999.20/x
  3. Step 3: Cross multiply
    2,947.04x = 4,420.20 × 999.20
  4. Step 4: Simplify right side
    2,947.04x = 4,416,663.84
  5. Step 5: Solve for x
    x = 4,416,663.84/2,947.04
  6. Step 6: Final answer
    x = 1,498.68

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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.