Home / 8,896.48-12,278.64-5,172.64

Finding the Fourth Proportional to 8,896.48, 12,278.64 and 5,172.64

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Solution

The fourth proportional to 8,896.48, 12,278.64 and 5,172.64 is: 7,139.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,896.48 : 12,278.64 = 5,172.64 : x
  2. Step 2: Convert to fraction form
    8,896.48/12,278.64 = 5,172.64/x
  3. Step 3: Cross multiply
    8,896.48x = 12,278.64 × 5,172.64
  4. Step 4: Simplify right side
    8,896.48x = 63,512,984.41
  5. Step 5: Solve for x
    x = 63,512,984.41/8,896.48
  6. Step 6: Final answer
    x = 7,139.11

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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.