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Finding the Fourth Proportional to 2,391, 3,299.69 and 1,343.07

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Solution

The fourth proportional to 2,391, 3,299.69 and 1,343.07 is: 1,853.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,391 : 3,299.69 = 1,343.07 : x
  2. Step 2: Convert to fraction form
    2,391/3,299.69 = 1,343.07/x
  3. Step 3: Cross multiply
    2,391x = 3,299.69 × 1,343.07
  4. Step 4: Simplify right side
    2,391x = 4,431,707.93
  5. Step 5: Solve for x
    x = 4,431,707.93/2,391
  6. Step 6: Final answer
    x = 1,853.50

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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.