Home / 2,987.98-4,120.08-2,043.93

Finding the Fourth Proportional to 2,987.98, 4,120.08 and 2,043.93

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Solution

The fourth proportional to 2,987.98, 4,120.08 and 2,043.93 is: 2,818.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.98 : 4,120.08 = 2,043.93 : x
  2. Step 2: Convert to fraction form
    2,987.98/4,120.08 = 2,043.93/x
  3. Step 3: Cross multiply
    2,987.98x = 4,120.08 × 2,043.93
  4. Step 4: Simplify right side
    2,987.98x = 8,421,155.11
  5. Step 5: Solve for x
    x = 8,421,155.11/2,987.98
  6. Step 6: Final answer
    x = 2,818.34

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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.