Home / 5,220.40-7,208.76-4,971.44

Finding the Fourth Proportional to 5,220.40, 7,208.76 and 4,971.44

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Solution

The fourth proportional to 5,220.40, 7,208.76 and 4,971.44 is: 6,864.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,220.40 : 7,208.76 = 4,971.44 : x
  2. Step 2: Convert to fraction form
    5,220.40/7,208.76 = 4,971.44/x
  3. Step 3: Cross multiply
    5,220.40x = 7,208.76 × 4,971.44
  4. Step 4: Simplify right side
    5,220.40x = 35,837,917.81
  5. Step 5: Solve for x
    x = 35,837,917.81/5,220.40
  6. Step 6: Final answer
    x = 6,864.98

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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.