Home / 8,968.76-12,376.95-4,990.04

Finding the Fourth Proportional to 8,968.76, 12,376.95 and 4,990.04

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Solution

The fourth proportional to 8,968.76, 12,376.95 and 4,990.04 is: 6,886.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,968.76 : 12,376.95 = 4,990.04 : x
  2. Step 2: Convert to fraction form
    8,968.76/12,376.95 = 4,990.04/x
  3. Step 3: Cross multiply
    8,968.76x = 12,376.95 × 4,990.04
  4. Step 4: Simplify right side
    8,968.76x = 61,761,475.58
  5. Step 5: Solve for x
    x = 61,761,475.58/8,968.76
  6. Step 6: Final answer
    x = 6,886.29

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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.