Home / 5,376.77-7,420.31-2,987.03

Finding the Fourth Proportional to 5,376.77, 7,420.31 and 2,987.03

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Solution

The fourth proportional to 5,376.77, 7,420.31 and 2,987.03 is: 4,122.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,376.77 : 7,420.31 = 2,987.03 : x
  2. Step 2: Convert to fraction form
    5,376.77/7,420.31 = 2,987.03/x
  3. Step 3: Cross multiply
    5,376.77x = 7,420.31 × 2,987.03
  4. Step 4: Simplify right side
    5,376.77x = 22,164,636.54
  5. Step 5: Solve for x
    x = 22,164,636.54/5,376.77
  6. Step 6: Final answer
    x = 4,122.30

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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.