Home / 1,511.09-2,085.37-847.92

Finding the Fourth Proportional to 1,511.09, 2,085.37 and 847.92

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Solution

The fourth proportional to 1,511.09, 2,085.37 and 847.92 is: 1,170.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.09 : 2,085.37 = 847.92 : x
  2. Step 2: Convert to fraction form
    1,511.09/2,085.37 = 847.92/x
  3. Step 3: Cross multiply
    1,511.09x = 2,085.37 × 847.92
  4. Step 4: Simplify right side
    1,511.09x = 1,768,224.81
  5. Step 5: Solve for x
    x = 1,768,224.81/1,511.09
  6. Step 6: Final answer
    x = 1,170.17

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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.