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Finding the Fourth Proportional to 9,371.90, 12,935.43 and 5,395.34

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Solution

The fourth proportional to 9,371.90, 12,935.43 and 5,395.34 is: 7,446.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,371.90 : 12,935.43 = 5,395.34 : x
  2. Step 2: Convert to fraction form
    9,371.90/12,935.43 = 5,395.34/x
  3. Step 3: Cross multiply
    9,371.90x = 12,935.43 × 5,395.34
  4. Step 4: Simplify right side
    9,371.90x = 69,791,075.23
  5. Step 5: Solve for x
    x = 69,791,075.23/9,371.90
  6. Step 6: Final answer
    x = 7,446.84

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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.