Home / 1,690.04-2,535.66-765.50

Finding the Fourth Proportional to 1,690.04, 2,535.66 and 765.50

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Solution

The fourth proportional to 1,690.04, 2,535.66 and 765.50 is: 1,148.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690.04 : 2,535.66 = 765.50 : x
  2. Step 2: Convert to fraction form
    1,690.04/2,535.66 = 765.50/x
  3. Step 3: Cross multiply
    1,690.04x = 2,535.66 × 765.50
  4. Step 4: Simplify right side
    1,690.04x = 1,941,047.73
  5. Step 5: Solve for x
    x = 1,941,047.73/1,690.04
  6. Step 6: Final answer
    x = 1,148.52

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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.