Home / 3,139.23-4,331.16-1,897.23

Finding the Fourth Proportional to 3,139.23, 4,331.16 and 1,897.23

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Solution

The fourth proportional to 3,139.23, 4,331.16 and 1,897.23 is: 2,617.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.23 : 4,331.16 = 1,897.23 : x
  2. Step 2: Convert to fraction form
    3,139.23/4,331.16 = 1,897.23/x
  3. Step 3: Cross multiply
    3,139.23x = 4,331.16 × 1,897.23
  4. Step 4: Simplify right side
    3,139.23x = 8,217,206.69
  5. Step 5: Solve for x
    x = 8,217,206.69/3,139.23
  6. Step 6: Final answer
    x = 2,617.59

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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.