Home / 1,988.69-2,744.91-1,242.23

Finding the Fourth Proportional to 1,988.69, 2,744.91 and 1,242.23

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Solution

The fourth proportional to 1,988.69, 2,744.91 and 1,242.23 is: 1,714.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.69 : 2,744.91 = 1,242.23 : x
  2. Step 2: Convert to fraction form
    1,988.69/2,744.91 = 1,242.23/x
  3. Step 3: Cross multiply
    1,988.69x = 2,744.91 × 1,242.23
  4. Step 4: Simplify right side
    1,988.69x = 3,409,795.82
  5. Step 5: Solve for x
    x = 3,409,795.82/1,988.69
  6. Step 6: Final answer
    x = 1,714.60

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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.