Home / 2,970.57-4,099.50-2,223.21

Finding the Fourth Proportional to 2,970.57, 4,099.50 and 2,223.21

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Solution

The fourth proportional to 2,970.57, 4,099.50 and 2,223.21 is: 3,068.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,970.57 : 4,099.50 = 2,223.21 : x
  2. Step 2: Convert to fraction form
    2,970.57/4,099.50 = 2,223.21/x
  3. Step 3: Cross multiply
    2,970.57x = 4,099.50 × 2,223.21
  4. Step 4: Simplify right side
    2,970.57x = 9,114,049.40
  5. Step 5: Solve for x
    x = 9,114,049.40/2,970.57
  6. Step 6: Final answer
    x = 3,068.11

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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.