Home / 3,113.15-4,670.17-921.59

Finding the Fourth Proportional to 3,113.15, 4,670.17 and 921.59

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Solution

The fourth proportional to 3,113.15, 4,670.17 and 921.59 is: 1,382.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,113.15 : 4,670.17 = 921.59 : x
  2. Step 2: Convert to fraction form
    3,113.15/4,670.17 = 921.59/x
  3. Step 3: Cross multiply
    3,113.15x = 4,670.17 × 921.59
  4. Step 4: Simplify right side
    3,113.15x = 4,303,958.62
  5. Step 5: Solve for x
    x = 4,303,958.62/3,113.15
  6. Step 6: Final answer
    x = 1,382.51

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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.