Home / 6,617.16-9,108.81-5,720.49

Finding the Fourth Proportional to 6,617.16, 9,108.81 and 5,720.49

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Solution

The fourth proportional to 6,617.16, 9,108.81 and 5,720.49 is: 7,874.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,617.16 : 9,108.81 = 5,720.49 : x
  2. Step 2: Convert to fraction form
    6,617.16/9,108.81 = 5,720.49/x
  3. Step 3: Cross multiply
    6,617.16x = 9,108.81 × 5,720.49
  4. Step 4: Simplify right side
    6,617.16x = 52,106,856.52
  5. Step 5: Solve for x
    x = 52,106,856.52/6,617.16
  6. Step 6: Final answer
    x = 7,874.50

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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.