Home / 2,402.13-3,312.65-1,561.87

Finding the Fourth Proportional to 2,402.13, 3,312.65 and 1,561.87

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Solution

The fourth proportional to 2,402.13, 3,312.65 and 1,561.87 is: 2,153.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,402.13 : 3,312.65 = 1,561.87 : x
  2. Step 2: Convert to fraction form
    2,402.13/3,312.65 = 1,561.87/x
  3. Step 3: Cross multiply
    2,402.13x = 3,312.65 × 1,561.87
  4. Step 4: Simplify right side
    2,402.13x = 5,173,916.47
  5. Step 5: Solve for x
    x = 5,173,916.47/2,402.13
  6. Step 6: Final answer
    x = 2,153.89

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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.