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Finding the Fourth Proportional to 5,726.88, 7,902.36 and 3,368.16

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Solution

The fourth proportional to 5,726.88, 7,902.36 and 3,368.16 is: 4,647.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,726.88 : 7,902.36 = 3,368.16 : x
  2. Step 2: Convert to fraction form
    5,726.88/7,902.36 = 3,368.16/x
  3. Step 3: Cross multiply
    5,726.88x = 7,902.36 × 3,368.16
  4. Step 4: Simplify right side
    5,726.88x = 26,616,412.86
  5. Step 5: Solve for x
    x = 26,616,412.86/5,726.88
  6. Step 6: Final answer
    x = 4,647.63

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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.