Home / 1,306.02-1,968.69-1,230.78

Finding the Fourth Proportional to 1,306.02, 1,968.69 and 1,230.78

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Solution

The fourth proportional to 1,306.02, 1,968.69 and 1,230.78 is: 1,855.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,306.02 : 1,968.69 = 1,230.78 : x
  2. Step 2: Convert to fraction form
    1,306.02/1,968.69 = 1,230.78/x
  3. Step 3: Cross multiply
    1,306.02x = 1,968.69 × 1,230.78
  4. Step 4: Simplify right side
    1,306.02x = 2,423,024.28
  5. Step 5: Solve for x
    x = 2,423,024.28/1,306.02
  6. Step 6: Final answer
    x = 1,855.27

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.