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Finding the Fourth Proportional to 8,312.51, 12,437.78 and 4,982.60

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Solution

The fourth proportional to 8,312.51, 12,437.78 and 4,982.60 is: 7,455.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,312.51 : 12,437.78 = 4,982.60 : x
  2. Step 2: Convert to fraction form
    8,312.51/12,437.78 = 4,982.60/x
  3. Step 3: Cross multiply
    8,312.51x = 12,437.78 × 4,982.60
  4. Step 4: Simplify right side
    8,312.51x = 61,972,395.53
  5. Step 5: Solve for x
    x = 61,972,395.53/8,312.51
  6. Step 6: Final answer
    x = 7,455.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.