Home / 2,117.90-3,176.85-801.65

Finding the Fourth Proportional to 2,117.90, 3,176.85 and 801.65

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Solution

The fourth proportional to 2,117.90, 3,176.85 and 801.65 is: 1,202.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.90 : 3,176.85 = 801.65 : x
  2. Step 2: Convert to fraction form
    2,117.90/3,176.85 = 801.65/x
  3. Step 3: Cross multiply
    2,117.90x = 3,176.85 × 801.65
  4. Step 4: Simplify right side
    2,117.90x = 2,546,721.80
  5. Step 5: Solve for x
    x = 2,546,721.80/2,117.90
  6. Step 6: Final answer
    x = 1,202.48

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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.