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Finding the Fourth Proportional to 8,155.49, 11,254.59 and 4,429.49

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Solution

The fourth proportional to 8,155.49, 11,254.59 and 4,429.49 is: 6,112.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,155.49 : 11,254.59 = 4,429.49 : x
  2. Step 2: Convert to fraction form
    8,155.49/11,254.59 = 4,429.49/x
  3. Step 3: Cross multiply
    8,155.49x = 11,254.59 × 4,429.49
  4. Step 4: Simplify right side
    8,155.49x = 49,852,071.71
  5. Step 5: Solve for x
    x = 49,852,071.71/8,155.49
  6. Step 6: Final answer
    x = 6,112.70

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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.