Home / 1,511.08-2,085.22-889.96

Finding the Fourth Proportional to 1,511.08, 2,085.22 and 889.96

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Solution

The fourth proportional to 1,511.08, 2,085.22 and 889.96 is: 1,228.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.08 : 2,085.22 = 889.96 : x
  2. Step 2: Convert to fraction form
    1,511.08/2,085.22 = 889.96/x
  3. Step 3: Cross multiply
    1,511.08x = 2,085.22 × 889.96
  4. Step 4: Simplify right side
    1,511.08x = 1,855,762.39
  5. Step 5: Solve for x
    x = 1,855,762.39/1,511.08
  6. Step 6: Final answer
    x = 1,228.10

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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.