Home / 2,085.60-3,127.08-1,111.44

Finding the Fourth Proportional to 2,085.60, 3,127.08 and 1,111.44

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Solution

The fourth proportional to 2,085.60, 3,127.08 and 1,111.44 is: 1,666.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,085.60 : 3,127.08 = 1,111.44 : x
  2. Step 2: Convert to fraction form
    2,085.60/3,127.08 = 1,111.44/x
  3. Step 3: Cross multiply
    2,085.60x = 3,127.08 × 1,111.44
  4. Step 4: Simplify right side
    2,085.60x = 3,475,561.80
  5. Step 5: Solve for x
    x = 3,475,561.80/2,085.60
  6. Step 6: Final answer
    x = 1,666.46

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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.