Home / 7,139.68-10,698.96-6,361.18

Finding the Fourth Proportional to 7,139.68, 10,698.96 and 6,361.18

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Solution

The fourth proportional to 7,139.68, 10,698.96 and 6,361.18 is: 9,532.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.68 : 10,698.96 = 6,361.18 : x
  2. Step 2: Convert to fraction form
    7,139.68/10,698.96 = 6,361.18/x
  3. Step 3: Cross multiply
    7,139.68x = 10,698.96 × 6,361.18
  4. Step 4: Simplify right side
    7,139.68x = 68,058,010.37
  5. Step 5: Solve for x
    x = 68,058,010.37/7,139.68
  6. Step 6: Final answer
    x = 9,532.36

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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.