Home / 5,488.88-7,572.80-3,129.36

Finding the Fourth Proportional to 5,488.88, 7,572.80 and 3,129.36

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Solution

The fourth proportional to 5,488.88, 7,572.80 and 3,129.36 is: 4,317.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,488.88 : 7,572.80 = 3,129.36 : x
  2. Step 2: Convert to fraction form
    5,488.88/7,572.80 = 3,129.36/x
  3. Step 3: Cross multiply
    5,488.88x = 7,572.80 × 3,129.36
  4. Step 4: Simplify right side
    5,488.88x = 23,698,017.41
  5. Step 5: Solve for x
    x = 23,698,017.41/5,488.88
  6. Step 6: Final answer
    x = 4,317.46

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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.