Home / 1,511.10-2,084.55-889.98

Finding the Fourth Proportional to 1,511.10, 2,084.55 and 889.98

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Solution

The fourth proportional to 1,511.10, 2,084.55 and 889.98 is: 1,227.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.10 : 2,084.55 = 889.98 : x
  2. Step 2: Convert to fraction form
    1,511.10/2,084.55 = 889.98/x
  3. Step 3: Cross multiply
    1,511.10x = 2,084.55 × 889.98
  4. Step 4: Simplify right side
    1,511.10x = 1,855,207.81
  5. Step 5: Solve for x
    x = 1,855,207.81/1,511.10
  6. Step 6: Final answer
    x = 1,227.72

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1.5x scale

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.