Home / 4,720.98-7,079.82-1,388.31

Finding the Fourth Proportional to 4,720.98, 7,079.82 and 1,388.31

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Solution

The fourth proportional to 4,720.98, 7,079.82 and 1,388.31 is: 2,081.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,720.98 : 7,079.82 = 1,388.31 : x
  2. Step 2: Convert to fraction form
    4,720.98/7,079.82 = 1,388.31/x
  3. Step 3: Cross multiply
    4,720.98x = 7,079.82 × 1,388.31
  4. Step 4: Simplify right side
    4,720.98x = 9,828,984.90
  5. Step 5: Solve for x
    x = 9,828,984.90/4,720.98
  6. Step 6: Final answer
    x = 2,081.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.