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Finding the Fourth Proportional to 3,053.40, 4,580.11 and 862.15

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Solution

The fourth proportional to 3,053.40, 4,580.11 and 862.15 is: 1,293.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,053.40 : 4,580.11 = 862.15 : x
  2. Step 2: Convert to fraction form
    3,053.40/4,580.11 = 862.15/x
  3. Step 3: Cross multiply
    3,053.40x = 4,580.11 × 862.15
  4. Step 4: Simplify right side
    3,053.40x = 3,948,741.84
  5. Step 5: Solve for x
    x = 3,948,741.84/3,053.40
  6. Step 6: Final answer
    x = 1,293.23

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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.