Home / 3,168.12-4,752.86-947.13

Finding the Fourth Proportional to 3,168.12, 4,752.86 and 947.13

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Solution

The fourth proportional to 3,168.12, 4,752.86 and 947.13 is: 1,420.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,168.12 : 4,752.86 = 947.13 : x
  2. Step 2: Convert to fraction form
    3,168.12/4,752.86 = 947.13/x
  3. Step 3: Cross multiply
    3,168.12x = 4,752.86 × 947.13
  4. Step 4: Simplify right side
    3,168.12x = 4,501,578.66
  5. Step 5: Solve for x
    x = 4,501,578.66/3,168.12
  6. Step 6: Final answer
    x = 1,420.90

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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.