Home / 7,151.36-10,678.12-6,406.16

Finding the Fourth Proportional to 7,151.36, 10,678.12 and 6,406.16

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Solution

The fourth proportional to 7,151.36, 10,678.12 and 6,406.16 is: 9,565.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,151.36 : 10,678.12 = 6,406.16 : x
  2. Step 2: Convert to fraction form
    7,151.36/10,678.12 = 6,406.16/x
  3. Step 3: Cross multiply
    7,151.36x = 10,678.12 × 6,406.16
  4. Step 4: Simplify right side
    7,151.36x = 68,405,745.22
  5. Step 5: Solve for x
    x = 68,405,745.22/7,151.36
  6. Step 6: Final answer
    x = 9,565.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.