Home / 8,955.18-12,356.16-5,418.32

Finding the Fourth Proportional to 8,955.18, 12,356.16 and 5,418.32

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Solution

The fourth proportional to 8,955.18, 12,356.16 and 5,418.32 is: 7,476.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,955.18 : 12,356.16 = 5,418.32 : x
  2. Step 2: Convert to fraction form
    8,955.18/12,356.16 = 5,418.32/x
  3. Step 3: Cross multiply
    8,955.18x = 12,356.16 × 5,418.32
  4. Step 4: Simplify right side
    8,955.18x = 66,949,628.85
  5. Step 5: Solve for x
    x = 66,949,628.85/8,955.18
  6. Step 6: Final answer
    x = 7,476.08

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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.