Home / 1,307.89-1,961.02-614.26

Finding the Fourth Proportional to 1,307.89, 1,961.02 and 614.26

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Solution

The fourth proportional to 1,307.89, 1,961.02 and 614.26 is: 921.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,307.89 : 1,961.02 = 614.26 : x
  2. Step 2: Convert to fraction form
    1,307.89/1,961.02 = 614.26/x
  3. Step 3: Cross multiply
    1,307.89x = 1,961.02 × 614.26
  4. Step 4: Simplify right side
    1,307.89x = 1,204,579.36
  5. Step 5: Solve for x
    x = 1,204,579.36/1,307.89
  6. Step 6: Final answer
    x = 921.01

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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.