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Finding the Fourth Proportional to 5,437.40, 7,447.38 and 5,118.22

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Solution

The fourth proportional to 5,437.40, 7,447.38 and 5,118.22 is: 7,010.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,437.40 : 7,447.38 = 5,118.22 : x
  2. Step 2: Convert to fraction form
    5,437.40/7,447.38 = 5,118.22/x
  3. Step 3: Cross multiply
    5,437.40x = 7,447.38 × 5,118.22
  4. Step 4: Simplify right side
    5,437.40x = 38,117,329.26
  5. Step 5: Solve for x
    x = 38,117,329.26/5,437.40
  6. Step 6: Final answer
    x = 7,010.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.