Home / 3,145.65-4,341.38-1,887.40

Finding the Fourth Proportional to 3,145.65, 4,341.38 and 1,887.40

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Solution

The fourth proportional to 3,145.65, 4,341.38 and 1,887.40 is: 2,604.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.65 : 4,341.38 = 1,887.40 : x
  2. Step 2: Convert to fraction form
    3,145.65/4,341.38 = 1,887.40/x
  3. Step 3: Cross multiply
    3,145.65x = 4,341.38 × 1,887.40
  4. Step 4: Simplify right side
    3,145.65x = 8,193,920.61
  5. Step 5: Solve for x
    x = 8,193,920.61/3,145.65
  6. Step 6: Final answer
    x = 2,604.84

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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.