Home / 2,076.90-2,866.08-1,145.40

Finding the Fourth Proportional to 2,076.90, 2,866.08 and 1,145.40

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Solution

The fourth proportional to 2,076.90, 2,866.08 and 1,145.40 is: 1,580.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,076.90 : 2,866.08 = 1,145.40 : x
  2. Step 2: Convert to fraction form
    2,076.90/2,866.08 = 1,145.40/x
  3. Step 3: Cross multiply
    2,076.90x = 2,866.08 × 1,145.40
  4. Step 4: Simplify right side
    2,076.90x = 3,282,808.03
  5. Step 5: Solve for x
    x = 3,282,808.03/2,076.90
  6. Step 6: Final answer
    x = 1,580.63

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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.