Home / 8,813.97-13,220.56-2,970.55

Finding the Fourth Proportional to 8,813.97, 13,220.56 and 2,970.55

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Solution

The fourth proportional to 8,813.97, 13,220.56 and 2,970.55 is: 4,455.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,813.97 : 13,220.56 = 2,970.55 : x
  2. Step 2: Convert to fraction form
    8,813.97/13,220.56 = 2,970.55/x
  3. Step 3: Cross multiply
    8,813.97x = 13,220.56 × 2,970.55
  4. Step 4: Simplify right side
    8,813.97x = 39,272,334.51
  5. Step 5: Solve for x
    x = 39,272,334.51/8,813.97
  6. Step 6: Final answer
    x = 4,455.69

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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.