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Finding the Fourth Proportional to 7,036.70, 9,709.69 and 4,012.21

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Solution

The fourth proportional to 7,036.70, 9,709.69 and 4,012.21 is: 5,536.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,036.70 : 9,709.69 = 4,012.21 : x
  2. Step 2: Convert to fraction form
    7,036.70/9,709.69 = 4,012.21/x
  3. Step 3: Cross multiply
    7,036.70x = 9,709.69 × 4,012.21
  4. Step 4: Simplify right side
    7,036.70x = 38,957,315.31
  5. Step 5: Solve for x
    x = 38,957,315.31/7,036.70
  6. Step 6: Final answer
    x = 5,536.30

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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.