Home / 1,348.65-2,021.40-618.30

Finding the Fourth Proportional to 1,348.65, 2,021.40 and 618.30

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Solution

The fourth proportional to 1,348.65, 2,021.40 and 618.30 is: 926.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,348.65 : 2,021.40 = 618.30 : x
  2. Step 2: Convert to fraction form
    1,348.65/2,021.40 = 618.30/x
  3. Step 3: Cross multiply
    1,348.65x = 2,021.40 × 618.30
  4. Step 4: Simplify right side
    1,348.65x = 1,249,831.62
  5. Step 5: Solve for x
    x = 1,249,831.62/1,348.65
  6. Step 6: Final answer
    x = 926.73

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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.