Home / 7,620.40-10,515.90-4,263.14

Finding the Fourth Proportional to 7,620.40, 10,515.90 and 4,263.14

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Solution

The fourth proportional to 7,620.40, 10,515.90 and 4,263.14 is: 5,882.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,620.40 : 10,515.90 = 4,263.14 : x
  2. Step 2: Convert to fraction form
    7,620.40/10,515.90 = 4,263.14/x
  3. Step 3: Cross multiply
    7,620.40x = 10,515.90 × 4,263.14
  4. Step 4: Simplify right side
    7,620.40x = 44,830,757.03
  5. Step 5: Solve for x
    x = 44,830,757.03/7,620.40
  6. Step 6: Final answer
    x = 5,882.99

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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.