Home / 1,511.29-2,085.58-848.15

Finding the Fourth Proportional to 1,511.29, 2,085.58 and 848.15

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Solution

The fourth proportional to 1,511.29, 2,085.58 and 848.15 is: 1,170.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.29 : 2,085.58 = 848.15 : x
  2. Step 2: Convert to fraction form
    1,511.29/2,085.58 = 848.15/x
  3. Step 3: Cross multiply
    1,511.29x = 2,085.58 × 848.15
  4. Step 4: Simplify right side
    1,511.29x = 1,768,879.46
  5. Step 5: Solve for x
    x = 1,768,879.46/1,511.29
  6. Step 6: Final answer
    x = 1,170.44

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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.