Home / 7,020.40-9,688.26-3,876.52

Finding the Fourth Proportional to 7,020.40, 9,688.26 and 3,876.52

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Solution

The fourth proportional to 7,020.40, 9,688.26 and 3,876.52 is: 5,349.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,020.40 : 9,688.26 = 3,876.52 : x
  2. Step 2: Convert to fraction form
    7,020.40/9,688.26 = 3,876.52/x
  3. Step 3: Cross multiply
    7,020.40x = 9,688.26 × 3,876.52
  4. Step 4: Simplify right side
    7,020.40x = 37,556,733.66
  5. Step 5: Solve for x
    x = 37,556,733.66/7,020.40
  6. Step 6: Final answer
    x = 5,349.66

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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.