Home / 8,869.29-12,239.71-4,890.55

Finding the Fourth Proportional to 8,869.29, 12,239.71 and 4,890.55

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Solution

The fourth proportional to 8,869.29, 12,239.71 and 4,890.55 is: 6,749.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,869.29 : 12,239.71 = 4,890.55 : x
  2. Step 2: Convert to fraction form
    8,869.29/12,239.71 = 4,890.55/x
  3. Step 3: Cross multiply
    8,869.29x = 12,239.71 × 4,890.55
  4. Step 4: Simplify right side
    8,869.29x = 59,858,828.09
  5. Step 5: Solve for x
    x = 59,858,828.09/8,869.29
  6. Step 6: Final answer
    x = 6,749.00

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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.