Home / 2,074.04-3,111.54-687.36

Finding the Fourth Proportional to 2,074.04, 3,111.54 and 687.36

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Solution

The fourth proportional to 2,074.04, 3,111.54 and 687.36 is: 1,031.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,074.04 : 3,111.54 = 687.36 : x
  2. Step 2: Convert to fraction form
    2,074.04/3,111.54 = 687.36/x
  3. Step 3: Cross multiply
    2,074.04x = 3,111.54 × 687.36
  4. Step 4: Simplify right side
    2,074.04x = 2,138,748.13
  5. Step 5: Solve for x
    x = 2,138,748.13/2,074.04
  6. Step 6: Final answer
    x = 1,031.20

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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.