Home / 2,840.07-4,259.20-1,971.75

Finding the Fourth Proportional to 2,840.07, 4,259.20 and 1,971.75

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Solution

The fourth proportional to 2,840.07, 4,259.20 and 1,971.75 is: 2,957.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,840.07 : 4,259.20 = 1,971.75 : x
  2. Step 2: Convert to fraction form
    2,840.07/4,259.20 = 1,971.75/x
  3. Step 3: Cross multiply
    2,840.07x = 4,259.20 × 1,971.75
  4. Step 4: Simplify right side
    2,840.07x = 8,398,077.60
  5. Step 5: Solve for x
    x = 8,398,077.60/2,840.07
  6. Step 6: Final answer
    x = 2,957.00

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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.