Home / 8,922.88-12,316.10-5,386.32

Finding the Fourth Proportional to 8,922.88, 12,316.10 and 5,386.32

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Solution

The fourth proportional to 8,922.88, 12,316.10 and 5,386.32 is: 7,434.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,922.88 : 12,316.10 = 5,386.32 : x
  2. Step 2: Convert to fraction form
    8,922.88/12,316.10 = 5,386.32/x
  3. Step 3: Cross multiply
    8,922.88x = 12,316.10 × 5,386.32
  4. Step 4: Simplify right side
    8,922.88x = 66,338,455.75
  5. Step 5: Solve for x
    x = 66,338,455.75/8,922.88
  6. Step 6: Final answer
    x = 7,434.65

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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.