Home / 1,511.76-2,269.56-1,431.12

Finding the Fourth Proportional to 1,511.76, 2,269.56 and 1,431.12

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Solution

The fourth proportional to 1,511.76, 2,269.56 and 1,431.12 is: 2,148.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.76 : 2,269.56 = 1,431.12 : x
  2. Step 2: Convert to fraction form
    1,511.76/2,269.56 = 1,431.12/x
  3. Step 3: Cross multiply
    1,511.76x = 2,269.56 × 1,431.12
  4. Step 4: Simplify right side
    1,511.76x = 3,248,012.71
  5. Step 5: Solve for x
    x = 3,248,012.71/1,511.76
  6. Step 6: Final answer
    x = 2,148.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.