Home / 1,634.90-2,255.96-971.62

Finding the Fourth Proportional to 1,634.90, 2,255.96 and 971.62

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Solution

The fourth proportional to 1,634.90, 2,255.96 and 971.62 is: 1,340.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,634.90 : 2,255.96 = 971.62 : x
  2. Step 2: Convert to fraction form
    1,634.90/2,255.96 = 971.62/x
  3. Step 3: Cross multiply
    1,634.90x = 2,255.96 × 971.62
  4. Step 4: Simplify right side
    1,634.90x = 2,191,935.86
  5. Step 5: Solve for x
    x = 2,191,935.86/1,634.90
  6. Step 6: Final answer
    x = 1,340.72

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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.