Home / 1,695.40-2,339.76-1,107.52

Finding the Fourth Proportional to 1,695.40, 2,339.76 and 1,107.52

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Solution

The fourth proportional to 1,695.40, 2,339.76 and 1,107.52 is: 1,528.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,695.40 : 2,339.76 = 1,107.52 : x
  2. Step 2: Convert to fraction form
    1,695.40/2,339.76 = 1,107.52/x
  3. Step 3: Cross multiply
    1,695.40x = 2,339.76 × 1,107.52
  4. Step 4: Simplify right side
    1,695.40x = 2,591,331.00
  5. Step 5: Solve for x
    x = 2,591,331.00/1,695.40
  6. Step 6: Final answer
    x = 1,528.45

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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.