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Finding the Fourth Proportional to 8,242.63, 12,339.51 and 7,398.07

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Solution

The fourth proportional to 8,242.63, 12,339.51 and 7,398.07 is: 11,075.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,242.63 : 12,339.51 = 7,398.07 : x
  2. Step 2: Convert to fraction form
    8,242.63/12,339.51 = 7,398.07/x
  3. Step 3: Cross multiply
    8,242.63x = 12,339.51 × 7,398.07
  4. Step 4: Simplify right side
    8,242.63x = 91,288,558.75
  5. Step 5: Solve for x
    x = 91,288,558.75/8,242.63
  6. Step 6: Final answer
    x = 11,075.17

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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.