Home / 8,813.62-13,220.47-2,970.28

Finding the Fourth Proportional to 8,813.62, 13,220.47 and 2,970.28

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Solution

The fourth proportional to 8,813.62, 13,220.47 and 2,970.28 is: 4,455.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,813.62 : 13,220.47 = 2,970.28 : x
  2. Step 2: Convert to fraction form
    8,813.62/13,220.47 = 2,970.28/x
  3. Step 3: Cross multiply
    8,813.62x = 13,220.47 × 2,970.28
  4. Step 4: Simplify right side
    8,813.62x = 39,268,468.29
  5. Step 5: Solve for x
    x = 39,268,468.29/8,813.62
  6. Step 6: Final answer
    x = 4,455.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.