Home / 9,119.31-12,584.13-5,140.49

Finding the Fourth Proportional to 9,119.31, 12,584.13 and 5,140.49

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Solution

The fourth proportional to 9,119.31, 12,584.13 and 5,140.49 is: 7,093.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,119.31 : 12,584.13 = 5,140.49 : x
  2. Step 2: Convert to fraction form
    9,119.31/12,584.13 = 5,140.49/x
  3. Step 3: Cross multiply
    9,119.31x = 12,584.13 × 5,140.49
  4. Step 4: Simplify right side
    9,119.31x = 64,688,531.50
  5. Step 5: Solve for x
    x = 64,688,531.50/9,119.31
  6. Step 6: Final answer
    x = 7,093.58

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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.