Home / 1,559.32-2,340.12-693.40

Finding the Fourth Proportional to 1,559.32, 2,340.12 and 693.40

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Solution

The fourth proportional to 1,559.32, 2,340.12 and 693.40 is: 1,040.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,559.32 : 2,340.12 = 693.40 : x
  2. Step 2: Convert to fraction form
    1,559.32/2,340.12 = 693.40/x
  3. Step 3: Cross multiply
    1,559.32x = 2,340.12 × 693.40
  4. Step 4: Simplify right side
    1,559.32x = 1,622,639.21
  5. Step 5: Solve for x
    x = 1,622,639.21/1,559.32
  6. Step 6: Final answer
    x = 1,040.61

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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.