Home / 4,279.88-6,421.08-1,358.12

Finding the Fourth Proportional to 4,279.88, 6,421.08 and 1,358.12

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Solution

The fourth proportional to 4,279.88, 6,421.08 and 1,358.12 is: 2,037.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,279.88 : 6,421.08 = 1,358.12 : x
  2. Step 2: Convert to fraction form
    4,279.88/6,421.08 = 1,358.12/x
  3. Step 3: Cross multiply
    4,279.88x = 6,421.08 × 1,358.12
  4. Step 4: Simplify right side
    4,279.88x = 8,720,597.17
  5. Step 5: Solve for x
    x = 8,720,597.17/4,279.88
  6. Step 6: Final answer
    x = 2,037.58

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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.