Home / 1,511.56-2,085.91-1,070.20

Finding the Fourth Proportional to 1,511.56, 2,085.91 and 1,070.20

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Solution

The fourth proportional to 1,511.56, 2,085.91 and 1,070.20 is: 1,476.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.56 : 2,085.91 = 1,070.20 : x
  2. Step 2: Convert to fraction form
    1,511.56/2,085.91 = 1,070.20/x
  3. Step 3: Cross multiply
    1,511.56x = 2,085.91 × 1,070.20
  4. Step 4: Simplify right side
    1,511.56x = 2,232,340.88
  5. Step 5: Solve for x
    x = 2,232,340.88/1,511.56
  6. Step 6: Final answer
    x = 1,476.85

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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.