Home / 8,436.76-11,642.88-5,079.64

Finding the Fourth Proportional to 8,436.76, 11,642.88 and 5,079.64

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Solution

The fourth proportional to 8,436.76, 11,642.88 and 5,079.64 is: 7,009.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,436.76 : 11,642.88 = 5,079.64 : x
  2. Step 2: Convert to fraction form
    8,436.76/11,642.88 = 5,079.64/x
  3. Step 3: Cross multiply
    8,436.76x = 11,642.88 × 5,079.64
  4. Step 4: Simplify right side
    8,436.76x = 59,141,638.96
  5. Step 5: Solve for x
    x = 59,141,638.96/8,436.76
  6. Step 6: Final answer
    x = 7,009.99

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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.