Home / 2,170.35-2,991.95-1,423.01

Finding the Fourth Proportional to 2,170.35, 2,991.95 and 1,423.01

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Solution

The fourth proportional to 2,170.35, 2,991.95 and 1,423.01 is: 1,961.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,170.35 : 2,991.95 = 1,423.01 : x
  2. Step 2: Convert to fraction form
    2,170.35/2,991.95 = 1,423.01/x
  3. Step 3: Cross multiply
    2,170.35x = 2,991.95 × 1,423.01
  4. Step 4: Simplify right side
    2,170.35x = 4,257,567.65
  5. Step 5: Solve for x
    x = 4,257,567.65/2,170.35
  6. Step 6: Final answer
    x = 1,961.70

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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.