Home / 1,900.13-2,621.57-1,236.74

Finding the Fourth Proportional to 1,900.13, 2,621.57 and 1,236.74

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Solution

The fourth proportional to 1,900.13, 2,621.57 and 1,236.74 is: 1,706.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,900.13 : 2,621.57 = 1,236.74 : x
  2. Step 2: Convert to fraction form
    1,900.13/2,621.57 = 1,236.74/x
  3. Step 3: Cross multiply
    1,900.13x = 2,621.57 × 1,236.74
  4. Step 4: Simplify right side
    1,900.13x = 3,242,181.19
  5. Step 5: Solve for x
    x = 3,242,181.19/1,900.13
  6. Step 6: Final answer
    x = 1,706.30

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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.