Home / 7,020.39-9,688.71-4,037.20

Finding the Fourth Proportional to 7,020.39, 9,688.71 and 4,037.20

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Solution

The fourth proportional to 7,020.39, 9,688.71 and 4,037.20 is: 5,571.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,020.39 : 9,688.71 = 4,037.20 : x
  2. Step 2: Convert to fraction form
    7,020.39/9,688.71 = 4,037.20/x
  3. Step 3: Cross multiply
    7,020.39x = 9,688.71 × 4,037.20
  4. Step 4: Simplify right side
    7,020.39x = 39,115,260.01
  5. Step 5: Solve for x
    x = 39,115,260.01/7,020.39
  6. Step 6: Final answer
    x = 5,571.66

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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.