Home / 1,780.16-2,669.90-610.11

Finding the Fourth Proportional to 1,780.16, 2,669.90 and 610.11

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Solution

The fourth proportional to 1,780.16, 2,669.90 and 610.11 is: 915.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,780.16 : 2,669.90 = 610.11 : x
  2. Step 2: Convert to fraction form
    1,780.16/2,669.90 = 610.11/x
  3. Step 3: Cross multiply
    1,780.16x = 2,669.90 × 610.11
  4. Step 4: Simplify right side
    1,780.16x = 1,628,929.64
  5. Step 5: Solve for x
    x = 1,628,929.64/1,780.16
  6. Step 6: Final answer
    x = 915.05

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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.