Home / 7,091.40-10,690.20-6,615.66

Finding the Fourth Proportional to 7,091.40, 10,690.20 and 6,615.66

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Solution

The fourth proportional to 7,091.40, 10,690.20 and 6,615.66 is: 9,973.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,091.40 : 10,690.20 = 6,615.66 : x
  2. Step 2: Convert to fraction form
    7,091.40/10,690.20 = 6,615.66/x
  3. Step 3: Cross multiply
    7,091.40x = 10,690.20 × 6,615.66
  4. Step 4: Simplify right side
    7,091.40x = 70,722,728.53
  5. Step 5: Solve for x
    x = 70,722,728.53/7,091.40
  6. Step 6: Final answer
    x = 9,973.03

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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.