Home / 2,108.40-2,909.05-1,401.27

Finding the Fourth Proportional to 2,108.40, 2,909.05 and 1,401.27

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Solution

The fourth proportional to 2,108.40, 2,909.05 and 1,401.27 is: 1,933.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.40 : 2,909.05 = 1,401.27 : x
  2. Step 2: Convert to fraction form
    2,108.40/2,909.05 = 1,401.27/x
  3. Step 3: Cross multiply
    2,108.40x = 2,909.05 × 1,401.27
  4. Step 4: Simplify right side
    2,108.40x = 4,076,364.49
  5. Step 5: Solve for x
    x = 4,076,364.49/2,108.40
  6. Step 6: Final answer
    x = 1,933.39

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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.