Home / 3,121.31-4,681.95-1,475.58

Finding the Fourth Proportional to 3,121.31, 4,681.95 and 1,475.58

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Solution

The fourth proportional to 3,121.31, 4,681.95 and 1,475.58 is: 2,213.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.31 : 4,681.95 = 1,475.58 : x
  2. Step 2: Convert to fraction form
    3,121.31/4,681.95 = 1,475.58/x
  3. Step 3: Cross multiply
    3,121.31x = 4,681.95 × 1,475.58
  4. Step 4: Simplify right side
    3,121.31x = 6,908,591.78
  5. Step 5: Solve for x
    x = 6,908,591.78/3,121.31
  6. Step 6: Final answer
    x = 2,213.37

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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.