Home / 1,962.34-2,708.21-1,078.31

Finding the Fourth Proportional to 1,962.34, 2,708.21 and 1,078.31

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Solution

The fourth proportional to 1,962.34, 2,708.21 and 1,078.31 is: 1,488.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,962.34 : 2,708.21 = 1,078.31 : x
  2. Step 2: Convert to fraction form
    1,962.34/2,708.21 = 1,078.31/x
  3. Step 3: Cross multiply
    1,962.34x = 2,708.21 × 1,078.31
  4. Step 4: Simplify right side
    1,962.34x = 2,920,284.53
  5. Step 5: Solve for x
    x = 2,920,284.53/1,962.34
  6. Step 6: Final answer
    x = 1,488.17

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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.