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Finding the Fourth Proportional to 8,901.51, 13,287.05 and 7,850.58

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Solution

The fourth proportional to 8,901.51, 13,287.05 and 7,850.58 is: 11,718.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,901.51 : 13,287.05 = 7,850.58 : x
  2. Step 2: Convert to fraction form
    8,901.51/13,287.05 = 7,850.58/x
  3. Step 3: Cross multiply
    8,901.51x = 13,287.05 × 7,850.58
  4. Step 4: Simplify right side
    8,901.51x = 104,311,009.74
  5. Step 5: Solve for x
    x = 104,311,009.74/8,901.51
  6. Step 6: Final answer
    x = 11,718.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.