Home / 7,325.48-10,988.21-1,778.78

Finding the Fourth Proportional to 7,325.48, 10,988.21 and 1,778.78

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Solution

The fourth proportional to 7,325.48, 10,988.21 and 1,778.78 is: 2,668.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,325.48 : 10,988.21 = 1,778.78 : x
  2. Step 2: Convert to fraction form
    7,325.48/10,988.21 = 1,778.78/x
  3. Step 3: Cross multiply
    7,325.48x = 10,988.21 × 1,778.78
  4. Step 4: Simplify right side
    7,325.48x = 19,545,640.10
  5. Step 5: Solve for x
    x = 19,545,640.10/7,325.48
  6. Step 6: Final answer
    x = 2,668.17

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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.