Home / 7,325.78-10,989.75-2,130.98

Finding the Fourth Proportional to 7,325.78, 10,989.75 and 2,130.98

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Solution

The fourth proportional to 7,325.78, 10,989.75 and 2,130.98 is: 3,196.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,325.78 : 10,989.75 = 2,130.98 : x
  2. Step 2: Convert to fraction form
    7,325.78/10,989.75 = 2,130.98/x
  3. Step 3: Cross multiply
    7,325.78x = 10,989.75 × 2,130.98
  4. Step 4: Simplify right side
    7,325.78x = 23,418,937.46
  5. Step 5: Solve for x
    x = 23,418,937.46/7,325.78
  6. Step 6: Final answer
    x = 3,196.78

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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.