Home / 7,135.02-9,905.63-6,921.18

Finding the Fourth Proportional to 7,135.02, 9,905.63 and 6,921.18

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Solution

The fourth proportional to 7,135.02, 9,905.63 and 6,921.18 is: 9,608.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,135.02 : 9,905.63 = 6,921.18 : x
  2. Step 2: Convert to fraction form
    7,135.02/9,905.63 = 6,921.18/x
  3. Step 3: Cross multiply
    7,135.02x = 9,905.63 × 6,921.18
  4. Step 4: Simplify right side
    7,135.02x = 68,558,613.64
  5. Step 5: Solve for x
    x = 68,558,613.64/7,135.02
  6. Step 6: Final answer
    x = 9,608.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.