Home / 2,987.94-4,120.26-2,045.10

Finding the Fourth Proportional to 2,987.94, 4,120.26 and 2,045.10

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Solution

The fourth proportional to 2,987.94, 4,120.26 and 2,045.10 is: 2,820.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.94 : 4,120.26 = 2,045.10 : x
  2. Step 2: Convert to fraction form
    2,987.94/4,120.26 = 2,045.10/x
  3. Step 3: Cross multiply
    2,987.94x = 4,120.26 × 2,045.10
  4. Step 4: Simplify right side
    2,987.94x = 8,426,343.73
  5. Step 5: Solve for x
    x = 8,426,343.73/2,987.94
  6. Step 6: Final answer
    x = 2,820.12

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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.