Home / 7,101.40-10,705.28-6,625.68

Finding the Fourth Proportional to 7,101.40, 10,705.28 and 6,625.68

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Solution

The fourth proportional to 7,101.40, 10,705.28 and 6,625.68 is: 9,988.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,101.40 : 10,705.28 = 6,625.68 : x
  2. Step 2: Convert to fraction form
    7,101.40/10,705.28 = 6,625.68/x
  3. Step 3: Cross multiply
    7,101.40x = 10,705.28 × 6,625.68
  4. Step 4: Simplify right side
    7,101.40x = 70,929,759.59
  5. Step 5: Solve for x
    x = 70,929,759.59/7,101.40
  6. Step 6: Final answer
    x = 9,988.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.