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Finding the Fourth Proportional to 2,421, 3,611.40 and 2,340.01

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Solution

The fourth proportional to 2,421, 3,611.40 and 2,340.01 is: 3,490.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421 : 3,611.40 = 2,340.01 : x
  2. Step 2: Convert to fraction form
    2,421/3,611.40 = 2,340.01/x
  3. Step 3: Cross multiply
    2,421x = 3,611.40 × 2,340.01
  4. Step 4: Simplify right side
    2,421x = 8,450,712.11
  5. Step 5: Solve for x
    x = 8,450,712.11/2,421
  6. Step 6: Final answer
    x = 3,490.59

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.