Home / 1,910.07-2,863.02-921.45

Finding the Fourth Proportional to 1,910.07, 2,863.02 and 921.45

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Solution

The fourth proportional to 1,910.07, 2,863.02 and 921.45 is: 1,381.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,910.07 : 2,863.02 = 921.45 : x
  2. Step 2: Convert to fraction form
    1,910.07/2,863.02 = 921.45/x
  3. Step 3: Cross multiply
    1,910.07x = 2,863.02 × 921.45
  4. Step 4: Simplify right side
    1,910.07x = 2,638,129.78
  5. Step 5: Solve for x
    x = 2,638,129.78/1,910.07
  6. Step 6: Final answer
    x = 1,381.17

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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.