Home / 1,988.51-2,747.44-1,572.06

Finding the Fourth Proportional to 1,988.51, 2,747.44 and 1,572.06

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Solution

The fourth proportional to 1,988.51, 2,747.44 and 1,572.06 is: 2,172.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.51 : 2,747.44 = 1,572.06 : x
  2. Step 2: Convert to fraction form
    1,988.51/2,747.44 = 1,572.06/x
  3. Step 3: Cross multiply
    1,988.51x = 2,747.44 × 1,572.06
  4. Step 4: Simplify right side
    1,988.51x = 4,319,140.53
  5. Step 5: Solve for x
    x = 4,319,140.53/1,988.51
  6. Step 6: Final answer
    x = 2,172.05

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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.