Home / 2,001.63-2,987.99-1,911.76

Finding the Fourth Proportional to 2,001.63, 2,987.99 and 1,911.76

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Solution

The fourth proportional to 2,001.63, 2,987.99 and 1,911.76 is: 2,853.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,001.63 : 2,987.99 = 1,911.76 : x
  2. Step 2: Convert to fraction form
    2,001.63/2,987.99 = 1,911.76/x
  3. Step 3: Cross multiply
    2,001.63x = 2,987.99 × 1,911.76
  4. Step 4: Simplify right side
    2,001.63x = 5,712,328.28
  5. Step 5: Solve for x
    x = 5,712,328.28/2,001.63
  6. Step 6: Final answer
    x = 2,853.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.