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Finding the Fourth Proportional to 5,357.28, 7,393.32 and 2,999.28

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Solution

The fourth proportional to 5,357.28, 7,393.32 and 2,999.28 is: 4,139.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,357.28 : 7,393.32 = 2,999.28 : x
  2. Step 2: Convert to fraction form
    5,357.28/7,393.32 = 2,999.28/x
  3. Step 3: Cross multiply
    5,357.28x = 7,393.32 × 2,999.28
  4. Step 4: Simplify right side
    5,357.28x = 22,174,636.81
  5. Step 5: Solve for x
    x = 22,174,636.81/5,357.28
  6. Step 6: Final answer
    x = 4,139.16

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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.