Home / 1,447.24-2,170.40-926.50

Finding the Fourth Proportional to 1,447.24, 2,170.40 and 926.50

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Solution

The fourth proportional to 1,447.24, 2,170.40 and 926.50 is: 1,389.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,447.24 : 2,170.40 = 926.50 : x
  2. Step 2: Convert to fraction form
    1,447.24/2,170.40 = 926.50/x
  3. Step 3: Cross multiply
    1,447.24x = 2,170.40 × 926.50
  4. Step 4: Simplify right side
    1,447.24x = 2,010,875.60
  5. Step 5: Solve for x
    x = 2,010,875.60/1,447.24
  6. Step 6: Final answer
    x = 1,389.46

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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.