Home / 2,121.10-2,926.32-1,562.90

Finding the Fourth Proportional to 2,121.10, 2,926.32 and 1,562.90

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Solution

The fourth proportional to 2,121.10, 2,926.32 and 1,562.90 is: 2,156.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.10 : 2,926.32 = 1,562.90 : x
  2. Step 2: Convert to fraction form
    2,121.10/2,926.32 = 1,562.90/x
  3. Step 3: Cross multiply
    2,121.10x = 2,926.32 × 1,562.90
  4. Step 4: Simplify right side
    2,121.10x = 4,573,541.50
  5. Step 5: Solve for x
    x = 4,573,541.50/2,121.10
  6. Step 6: Final answer
    x = 2,156.21

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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.