Home / 1,040.68-1,436.00-621.08

Finding the Fourth Proportional to 1,040.68, 1,436.00 and 621.08

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Solution

The fourth proportional to 1,040.68, 1,436.00 and 621.08 is: 857.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040.68 : 1,436.00 = 621.08 : x
  2. Step 2: Convert to fraction form
    1,040.68/1,436.00 = 621.08/x
  3. Step 3: Cross multiply
    1,040.68x = 1,436.00 × 621.08
  4. Step 4: Simplify right side
    1,040.68x = 891,865.98
  5. Step 5: Solve for x
    x = 891,865.98/1,040.68
  6. Step 6: Final answer
    x = 857.01

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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.