Home / 1,511.29-2,085.51-848.11

Finding the Fourth Proportional to 1,511.29, 2,085.51 and 848.11

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Solution

The fourth proportional to 1,511.29, 2,085.51 and 848.11 is: 1,170.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.29 : 2,085.51 = 848.11 : x
  2. Step 2: Convert to fraction form
    1,511.29/2,085.51 = 848.11/x
  3. Step 3: Cross multiply
    1,511.29x = 2,085.51 × 848.11
  4. Step 4: Simplify right side
    1,511.29x = 1,768,741.89
  5. Step 5: Solve for x
    x = 1,768,741.89/1,511.29
  6. Step 6: Final answer
    x = 1,170.35

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Double scale
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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.