Home / 8,968.51-12,376.61-4,989.79

Finding the Fourth Proportional to 8,968.51, 12,376.61 and 4,989.79

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Solution

The fourth proportional to 8,968.51, 12,376.61 and 4,989.79 is: 6,885.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,968.51 : 12,376.61 = 4,989.79 : x
  2. Step 2: Convert to fraction form
    8,968.51/12,376.61 = 4,989.79/x
  3. Step 3: Cross multiply
    8,968.51x = 12,376.61 × 4,989.79
  4. Step 4: Simplify right side
    8,968.51x = 61,756,684.81
  5. Step 5: Solve for x
    x = 61,756,684.81/8,968.51
  6. Step 6: Final answer
    x = 6,885.95

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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.