Home / 4,343.70-6,515.55-1,421.30

Finding the Fourth Proportional to 4,343.70, 6,515.55 and 1,421.30

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Solution

The fourth proportional to 4,343.70, 6,515.55 and 1,421.30 is: 2,131.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,343.70 : 6,515.55 = 1,421.30 : x
  2. Step 2: Convert to fraction form
    4,343.70/6,515.55 = 1,421.30/x
  3. Step 3: Cross multiply
    4,343.70x = 6,515.55 × 1,421.30
  4. Step 4: Simplify right side
    4,343.70x = 9,260,551.22
  5. Step 5: Solve for x
    x = 9,260,551.22/4,343.70
  6. Step 6: Final answer
    x = 2,131.95

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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.