Home / 2,319.60-3,461.80-2,130.64

Finding the Fourth Proportional to 2,319.60, 3,461.80 and 2,130.64

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Solution

The fourth proportional to 2,319.60, 3,461.80 and 2,130.64 is: 3,179.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,319.60 : 3,461.80 = 2,130.64 : x
  2. Step 2: Convert to fraction form
    2,319.60/3,461.80 = 2,130.64/x
  3. Step 3: Cross multiply
    2,319.60x = 3,461.80 × 2,130.64
  4. Step 4: Simplify right side
    2,319.60x = 7,375,849.55
  5. Step 5: Solve for x
    x = 7,375,849.55/2,319.60
  6. Step 6: Final answer
    x = 3,179.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.