Home / 1,511.07-2,269.35-1,389.12

Finding the Fourth Proportional to 1,511.07, 2,269.35 and 1,389.12

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Solution

The fourth proportional to 1,511.07, 2,269.35 and 1,389.12 is: 2,086.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.07 : 2,269.35 = 1,389.12 : x
  2. Step 2: Convert to fraction form
    1,511.07/2,269.35 = 1,389.12/x
  3. Step 3: Cross multiply
    1,511.07x = 2,269.35 × 1,389.12
  4. Step 4: Simplify right side
    1,511.07x = 3,152,399.47
  5. Step 5: Solve for x
    x = 3,152,399.47/1,511.07
  6. Step 6: Final answer
    x = 2,086.20

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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.