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Finding the Fourth Proportional to 8,954.34, 12,355.11 and 5,417.82

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Solution

The fourth proportional to 8,954.34, 12,355.11 and 5,417.82 is: 7,475.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,954.34 : 12,355.11 = 5,417.82 : x
  2. Step 2: Convert to fraction form
    8,954.34/12,355.11 = 5,417.82/x
  3. Step 3: Cross multiply
    8,954.34x = 12,355.11 × 5,417.82
  4. Step 4: Simplify right side
    8,954.34x = 66,937,762.06
  5. Step 5: Solve for x
    x = 66,937,762.06/8,954.34
  6. Step 6: Final answer
    x = 7,475.45

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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.