Home / 2,760.89-3,810.65-1,878.80

Finding the Fourth Proportional to 2,760.89, 3,810.65 and 1,878.80

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Solution

The fourth proportional to 2,760.89, 3,810.65 and 1,878.80 is: 2,593.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,760.89 : 3,810.65 = 1,878.80 : x
  2. Step 2: Convert to fraction form
    2,760.89/3,810.65 = 1,878.80/x
  3. Step 3: Cross multiply
    2,760.89x = 3,810.65 × 1,878.80
  4. Step 4: Simplify right side
    2,760.89x = 7,159,420.77
  5. Step 5: Solve for x
    x = 7,159,420.77/2,760.89
  6. Step 6: Final answer
    x = 2,593.16

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1.5x scale

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.