Home / 7,020.90-9,689.20-4,037.02

Finding the Fourth Proportional to 7,020.90, 9,689.20 and 4,037.02

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Solution

The fourth proportional to 7,020.90, 9,689.20 and 4,037.02 is: 5,571.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,020.90 : 9,689.20 = 4,037.02 : x
  2. Step 2: Convert to fraction form
    7,020.90/9,689.20 = 4,037.02/x
  3. Step 3: Cross multiply
    7,020.90x = 9,689.20 × 4,037.02
  4. Step 4: Simplify right side
    7,020.90x = 39,115,494.18
  5. Step 5: Solve for x
    x = 39,115,494.18/7,020.90
  6. Step 6: Final answer
    x = 5,571.29

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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.