Home / 2,151.54-2,969.19-1,312.52

Finding the Fourth Proportional to 2,151.54, 2,969.19 and 1,312.52

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Solution

The fourth proportional to 2,151.54, 2,969.19 and 1,312.52 is: 1,811.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.54 : 2,969.19 = 1,312.52 : x
  2. Step 2: Convert to fraction form
    2,151.54/2,969.19 = 1,312.52/x
  3. Step 3: Cross multiply
    2,151.54x = 2,969.19 × 1,312.52
  4. Step 4: Simplify right side
    2,151.54x = 3,897,106.41
  5. Step 5: Solve for x
    x = 3,897,106.41/2,151.54
  6. Step 6: Final answer
    x = 1,811.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.