Home / 7,770.08-11,607.09-6,988.84

Finding the Fourth Proportional to 7,770.08, 11,607.09 and 6,988.84

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Solution

The fourth proportional to 7,770.08, 11,607.09 and 6,988.84 is: 10,440.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,770.08 : 11,607.09 = 6,988.84 : x
  2. Step 2: Convert to fraction form
    7,770.08/11,607.09 = 6,988.84/x
  3. Step 3: Cross multiply
    7,770.08x = 11,607.09 × 6,988.84
  4. Step 4: Simplify right side
    7,770.08x = 81,120,094.88
  5. Step 5: Solve for x
    x = 81,120,094.88/7,770.08
  6. Step 6: Final answer
    x = 10,440.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.