Home / 8,749.98-12,072.90-5,165.07

Finding the Fourth Proportional to 8,749.98, 12,072.90 and 5,165.07

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Solution

The fourth proportional to 8,749.98, 12,072.90 and 5,165.07 is: 7,126.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,749.98 : 12,072.90 = 5,165.07 : x
  2. Step 2: Convert to fraction form
    8,749.98/12,072.90 = 5,165.07/x
  3. Step 3: Cross multiply
    8,749.98x = 12,072.90 × 5,165.07
  4. Step 4: Simplify right side
    8,749.98x = 62,357,373.60
  5. Step 5: Solve for x
    x = 62,357,373.60/8,749.98
  6. Step 6: Final answer
    x = 7,126.57

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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.