Home / 1,921.86-2,885.90-1,301.13

Finding the Fourth Proportional to 1,921.86, 2,885.90 and 1,301.13

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Solution

The fourth proportional to 1,921.86, 2,885.90 and 1,301.13 is: 1,953.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.86 : 2,885.90 = 1,301.13 : x
  2. Step 2: Convert to fraction form
    1,921.86/2,885.90 = 1,301.13/x
  3. Step 3: Cross multiply
    1,921.86x = 2,885.90 × 1,301.13
  4. Step 4: Simplify right side
    1,921.86x = 3,754,924.56
  5. Step 5: Solve for x
    x = 3,754,924.56/1,921.86
  6. Step 6: Final answer
    x = 1,953.80

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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.