Home / 3,139.65-4,331.21-1,880.37

Finding the Fourth Proportional to 3,139.65, 4,331.21 and 1,880.37

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Solution

The fourth proportional to 3,139.65, 4,331.21 and 1,880.37 is: 2,594.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.65 : 4,331.21 = 1,880.37 : x
  2. Step 2: Convert to fraction form
    3,139.65/4,331.21 = 1,880.37/x
  3. Step 3: Cross multiply
    3,139.65x = 4,331.21 × 1,880.37
  4. Step 4: Simplify right side
    3,139.65x = 8,144,267.95
  5. Step 5: Solve for x
    x = 8,144,267.95/3,139.65
  6. Step 6: Final answer
    x = 2,594.01

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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.