Home / 9,868.95-13,619.20-5,392.78

Finding the Fourth Proportional to 9,868.95, 13,619.20 and 5,392.78

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Solution

The fourth proportional to 9,868.95, 13,619.20 and 5,392.78 is: 7,442.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,868.95 : 13,619.20 = 5,392.78 : x
  2. Step 2: Convert to fraction form
    9,868.95/13,619.20 = 5,392.78/x
  3. Step 3: Cross multiply
    9,868.95x = 13,619.20 × 5,392.78
  4. Step 4: Simplify right side
    9,868.95x = 73,445,349.38
  5. Step 5: Solve for x
    x = 73,445,349.38/9,868.95
  6. Step 6: Final answer
    x = 7,442.06

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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.