Home / 8,418.18-11,607.46-5,389.32

Finding the Fourth Proportional to 8,418.18, 11,607.46 and 5,389.32

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Solution

The fourth proportional to 8,418.18, 11,607.46 and 5,389.32 is: 7,431.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.18 : 11,607.46 = 5,389.32 : x
  2. Step 2: Convert to fraction form
    8,418.18/11,607.46 = 5,389.32/x
  3. Step 3: Cross multiply
    8,418.18x = 11,607.46 × 5,389.32
  4. Step 4: Simplify right side
    8,418.18x = 62,556,316.33
  5. Step 5: Solve for x
    x = 62,556,316.33/8,418.18
  6. Step 6: Final answer
    x = 7,431.10

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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.