Home / 2,900.90-4,352.70-1,515.80

Finding the Fourth Proportional to 2,900.90, 4,352.70 and 1,515.80

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Solution

The fourth proportional to 2,900.90, 4,352.70 and 1,515.80 is: 2,274.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,900.90 : 4,352.70 = 1,515.80 : x
  2. Step 2: Convert to fraction form
    2,900.90/4,352.70 = 1,515.80/x
  3. Step 3: Cross multiply
    2,900.90x = 4,352.70 × 1,515.80
  4. Step 4: Simplify right side
    2,900.90x = 6,597,822.66
  5. Step 5: Solve for x
    x = 6,597,822.66/2,900.90
  6. Step 6: Final answer
    x = 2,274.41

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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.