Home / 2,876.13-3,969.18-1,697.20

Finding the Fourth Proportional to 2,876.13, 3,969.18 and 1,697.20

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Solution

The fourth proportional to 2,876.13, 3,969.18 and 1,697.20 is: 2,342.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,876.13 : 3,969.18 = 1,697.20 : x
  2. Step 2: Convert to fraction form
    2,876.13/3,969.18 = 1,697.20/x
  3. Step 3: Cross multiply
    2,876.13x = 3,969.18 × 1,697.20
  4. Step 4: Simplify right side
    2,876.13x = 6,736,499.93
  5. Step 5: Solve for x
    x = 6,736,499.93/2,876.13
  6. Step 6: Final answer
    x = 2,342.21

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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.