Home / 9,689.12-13,370.34-5,440.28

Finding the Fourth Proportional to 9,689.12, 13,370.34 and 5,440.28

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Solution

The fourth proportional to 9,689.12, 13,370.34 and 5,440.28 is: 7,507.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,689.12 : 13,370.34 = 5,440.28 : x
  2. Step 2: Convert to fraction form
    9,689.12/13,370.34 = 5,440.28/x
  3. Step 3: Cross multiply
    9,689.12x = 13,370.34 × 5,440.28
  4. Step 4: Simplify right side
    9,689.12x = 72,738,393.30
  5. Step 5: Solve for x
    x = 72,738,393.30/9,689.12
  6. Step 6: Final answer
    x = 7,507.22

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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.