Home / 1,899.18-2,621.57-1,113.89

Finding the Fourth Proportional to 1,899.18, 2,621.57 and 1,113.89

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Solution

The fourth proportional to 1,899.18, 2,621.57 and 1,113.89 is: 1,537.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,899.18 : 2,621.57 = 1,113.89 : x
  2. Step 2: Convert to fraction form
    1,899.18/2,621.57 = 1,113.89/x
  3. Step 3: Cross multiply
    1,899.18x = 2,621.57 × 1,113.89
  4. Step 4: Simplify right side
    1,899.18x = 2,920,121.93
  5. Step 5: Solve for x
    x = 2,920,121.93/1,899.18
  6. Step 6: Final answer
    x = 1,537.57

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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.