Home / 2,679.21-3,697.65-1,560.20

Finding the Fourth Proportional to 2,679.21, 3,697.65 and 1,560.20

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Solution

The fourth proportional to 2,679.21, 3,697.65 and 1,560.20 is: 2,153.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.21 : 3,697.65 = 1,560.20 : x
  2. Step 2: Convert to fraction form
    2,679.21/3,697.65 = 1,560.20/x
  3. Step 3: Cross multiply
    2,679.21x = 3,697.65 × 1,560.20
  4. Step 4: Simplify right side
    2,679.21x = 5,769,055.04
  5. Step 5: Solve for x
    x = 5,769,055.04/2,679.21
  6. Step 6: Final answer
    x = 2,153.27

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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.