Home / 9,678.68-13,356.34-5,646.28

Finding the Fourth Proportional to 9,678.68, 13,356.34 and 5,646.28

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Solution

The fourth proportional to 9,678.68, 13,356.34 and 5,646.28 is: 7,791.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,678.68 : 13,356.34 = 5,646.28 : x
  2. Step 2: Convert to fraction form
    9,678.68/13,356.34 = 5,646.28/x
  3. Step 3: Cross multiply
    9,678.68x = 13,356.34 × 5,646.28
  4. Step 4: Simplify right side
    9,678.68x = 75,413,635.42
  5. Step 5: Solve for x
    x = 75,413,635.42/9,678.68
  6. Step 6: Final answer
    x = 7,791.73

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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.