Home / 8,718.40-12,030.88-4,992.32

Finding the Fourth Proportional to 8,718.40, 12,030.88 and 4,992.32

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Solution

The fourth proportional to 8,718.40, 12,030.88 and 4,992.32 is: 6,889.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,718.40 : 12,030.88 = 4,992.32 : x
  2. Step 2: Convert to fraction form
    8,718.40/12,030.88 = 4,992.32/x
  3. Step 3: Cross multiply
    8,718.40x = 12,030.88 × 4,992.32
  4. Step 4: Simplify right side
    8,718.40x = 60,062,002.84
  5. Step 5: Solve for x
    x = 60,062,002.84/8,718.40
  6. Step 6: Final answer
    x = 6,889.11

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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.