Home / 1,261.84-1,904.13-1,216.07

Finding the Fourth Proportional to 1,261.84, 1,904.13 and 1,216.07

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Solution

The fourth proportional to 1,261.84, 1,904.13 and 1,216.07 is: 1,835.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261.84 : 1,904.13 = 1,216.07 : x
  2. Step 2: Convert to fraction form
    1,261.84/1,904.13 = 1,216.07/x
  3. Step 3: Cross multiply
    1,261.84x = 1,904.13 × 1,216.07
  4. Step 4: Simplify right side
    1,261.84x = 2,315,555.37
  5. Step 5: Solve for x
    x = 2,315,555.37/1,261.84
  6. Step 6: Final answer
    x = 1,835.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.