Home / 1,352.19-1,869.28-1,339.74

Finding the Fourth Proportional to 1,352.19, 1,869.28 and 1,339.74

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Solution

The fourth proportional to 1,352.19, 1,869.28 and 1,339.74 is: 1,852.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,352.19 : 1,869.28 = 1,339.74 : x
  2. Step 2: Convert to fraction form
    1,352.19/1,869.28 = 1,339.74/x
  3. Step 3: Cross multiply
    1,352.19x = 1,869.28 × 1,339.74
  4. Step 4: Simplify right side
    1,352.19x = 2,504,345.84
  5. Step 5: Solve for x
    x = 2,504,345.84/1,352.19
  6. Step 6: Final answer
    x = 1,852.06

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1.5x scale

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.