Home / 7,899.20-10,900.40-4,362.48

Finding the Fourth Proportional to 7,899.20, 10,900.40 and 4,362.48

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Solution

The fourth proportional to 7,899.20, 10,900.40 and 4,362.48 is: 6,019.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,899.20 : 10,900.40 = 4,362.48 : x
  2. Step 2: Convert to fraction form
    7,899.20/10,900.40 = 4,362.48/x
  3. Step 3: Cross multiply
    7,899.20x = 10,900.40 × 4,362.48
  4. Step 4: Simplify right side
    7,899.20x = 47,552,776.99
  5. Step 5: Solve for x
    x = 47,552,776.99/7,899.20
  6. Step 6: Final answer
    x = 6,019.95

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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.