Home / 3,124.40-4,312.14-1,945.85

Finding the Fourth Proportional to 3,124.40, 4,312.14 and 1,945.85

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Solution

The fourth proportional to 3,124.40, 4,312.14 and 1,945.85 is: 2,685.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124.40 : 4,312.14 = 1,945.85 : x
  2. Step 2: Convert to fraction form
    3,124.40/4,312.14 = 1,945.85/x
  3. Step 3: Cross multiply
    3,124.40x = 4,312.14 × 1,945.85
  4. Step 4: Simplify right side
    3,124.40x = 8,390,756.06
  5. Step 5: Solve for x
    x = 8,390,756.06/3,124.40
  6. Step 6: Final answer
    x = 2,685.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.