Home / 8,785.18-12,123.79-4,806.49

Finding the Fourth Proportional to 8,785.18, 12,123.79 and 4,806.49

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Solution

The fourth proportional to 8,785.18, 12,123.79 and 4,806.49 is: 6,633.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,785.18 : 12,123.79 = 4,806.49 : x
  2. Step 2: Convert to fraction form
    8,785.18/12,123.79 = 4,806.49/x
  3. Step 3: Cross multiply
    8,785.18x = 12,123.79 × 4,806.49
  4. Step 4: Simplify right side
    8,785.18x = 58,272,875.40
  5. Step 5: Solve for x
    x = 58,272,875.40/8,785.18
  6. Step 6: Final answer
    x = 6,633.09

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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.