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Finding the Fourth Proportional to 2,407.76, 3,602.83 and 1,421.03

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Solution

The fourth proportional to 2,407.76, 3,602.83 and 1,421.03 is: 2,126.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,407.76 : 3,602.83 = 1,421.03 : x
  2. Step 2: Convert to fraction form
    2,407.76/3,602.83 = 1,421.03/x
  3. Step 3: Cross multiply
    2,407.76x = 3,602.83 × 1,421.03
  4. Step 4: Simplify right side
    2,407.76x = 5,119,729.51
  5. Step 5: Solve for x
    x = 5,119,729.51/2,407.76
  6. Step 6: Final answer
    x = 2,126.35

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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.