Home / 4,213.40-6,320.07-1,291.68

Finding the Fourth Proportional to 4,213.40, 6,320.07 and 1,291.68

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Solution

The fourth proportional to 4,213.40, 6,320.07 and 1,291.68 is: 1,937.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,213.40 : 6,320.07 = 1,291.68 : x
  2. Step 2: Convert to fraction form
    4,213.40/6,320.07 = 1,291.68/x
  3. Step 3: Cross multiply
    4,213.40x = 6,320.07 × 1,291.68
  4. Step 4: Simplify right side
    4,213.40x = 8,163,508.02
  5. Step 5: Solve for x
    x = 8,163,508.02/4,213.40
  6. Step 6: Final answer
    x = 1,937.51

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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.