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Finding the Fourth Proportional to 1,747.12, 2,620.68 and 976.72

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Solution

The fourth proportional to 1,747.12, 2,620.68 and 976.72 is: 1,465.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,747.12 : 2,620.68 = 976.72 : x
  2. Step 2: Convert to fraction form
    1,747.12/2,620.68 = 976.72/x
  3. Step 3: Cross multiply
    1,747.12x = 2,620.68 × 976.72
  4. Step 4: Simplify right side
    1,747.12x = 2,559,670.57
  5. Step 5: Solve for x
    x = 2,559,670.57/1,747.12
  6. Step 6: Final answer
    x = 1,465.08

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1.5x scale

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.