Home / 9,408.02-12,982.78-5,159.16

Finding the Fourth Proportional to 9,408.02, 12,982.78 and 5,159.16

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Solution

The fourth proportional to 9,408.02, 12,982.78 and 5,159.16 is: 7,119.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,408.02 : 12,982.78 = 5,159.16 : x
  2. Step 2: Convert to fraction form
    9,408.02/12,982.78 = 5,159.16/x
  3. Step 3: Cross multiply
    9,408.02x = 12,982.78 × 5,159.16
  4. Step 4: Simplify right side
    9,408.02x = 66,980,239.26
  5. Step 5: Solve for x
    x = 66,980,239.26/9,408.02
  6. Step 6: Final answer
    x = 7,119.48

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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.