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Finding the Fourth Proportional to 8,774.64, 12,109.03 and 5,237.78

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Solution

The fourth proportional to 8,774.64, 12,109.03 and 5,237.78 is: 7,228.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,774.64 : 12,109.03 = 5,237.78 : x
  2. Step 2: Convert to fraction form
    8,774.64/12,109.03 = 5,237.78/x
  3. Step 3: Cross multiply
    8,774.64x = 12,109.03 × 5,237.78
  4. Step 4: Simplify right side
    8,774.64x = 63,424,361.51
  5. Step 5: Solve for x
    x = 63,424,361.51/8,774.64
  6. Step 6: Final answer
    x = 7,228.14

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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.