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Finding the Fourth Proportional to 1,760.88, 2,430.08 and 974.91

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Solution

The fourth proportional to 1,760.88, 2,430.08 and 974.91 is: 1,345.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,760.88 : 2,430.08 = 974.91 : x
  2. Step 2: Convert to fraction form
    1,760.88/2,430.08 = 974.91/x
  3. Step 3: Cross multiply
    1,760.88x = 2,430.08 × 974.91
  4. Step 4: Simplify right side
    1,760.88x = 2,369,109.29
  5. Step 5: Solve for x
    x = 2,369,109.29/1,760.88
  6. Step 6: Final answer
    x = 1,345.41

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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.