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Finding the Fourth Proportional to 1,760.86, 2,430.11 and 974.94

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Solution

The fourth proportional to 1,760.86, 2,430.11 and 974.94 is: 1,345.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,760.86 : 2,430.11 = 974.94 : x
  2. Step 2: Convert to fraction form
    1,760.86/2,430.11 = 974.94/x
  3. Step 3: Cross multiply
    1,760.86x = 2,430.11 × 974.94
  4. Step 4: Simplify right side
    1,760.86x = 2,369,211.44
  5. Step 5: Solve for x
    x = 2,369,211.44/1,760.86
  6. Step 6: Final answer
    x = 1,345.49

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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.