Home / 6,516.72-8,989.36-4,122.32

Finding the Fourth Proportional to 6,516.72, 8,989.36 and 4,122.32

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Solution

The fourth proportional to 6,516.72, 8,989.36 and 4,122.32 is: 5,686.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,516.72 : 8,989.36 = 4,122.32 : x
  2. Step 2: Convert to fraction form
    6,516.72/8,989.36 = 4,122.32/x
  3. Step 3: Cross multiply
    6,516.72x = 8,989.36 × 4,122.32
  4. Step 4: Simplify right side
    6,516.72x = 37,057,018.52
  5. Step 5: Solve for x
    x = 37,057,018.52/6,516.72
  6. Step 6: Final answer
    x = 5,686.45

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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.