Home / 6,839.90-10,259.70-1,909.40

Finding the Fourth Proportional to 6,839.90, 10,259.70 and 1,909.40

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Solution

The fourth proportional to 6,839.90, 10,259.70 and 1,909.40 is: 2,864.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,839.90 : 10,259.70 = 1,909.40 : x
  2. Step 2: Convert to fraction form
    6,839.90/10,259.70 = 1,909.40/x
  3. Step 3: Cross multiply
    6,839.90x = 10,259.70 × 1,909.40
  4. Step 4: Simplify right side
    6,839.90x = 19,589,871.18
  5. Step 5: Solve for x
    x = 19,589,871.18/6,839.90
  6. Step 6: Final answer
    x = 2,864.06

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1.5x scale

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.