Home / 7,022.21-9,690.63-4,038.62

Finding the Fourth Proportional to 7,022.21, 9,690.63 and 4,038.62

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Solution

The fourth proportional to 7,022.21, 9,690.63 and 4,038.62 is: 5,573.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,022.21 : 9,690.63 = 4,038.62 : x
  2. Step 2: Convert to fraction form
    7,022.21/9,690.63 = 4,038.62/x
  3. Step 3: Cross multiply
    7,022.21x = 9,690.63 × 4,038.62
  4. Step 4: Simplify right side
    7,022.21x = 39,136,772.13
  5. Step 5: Solve for x
    x = 39,136,772.13/7,022.21
  6. Step 6: Final answer
    x = 5,573.28

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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.