Home / 1,105.21-1,525.13-607.84

Finding the Fourth Proportional to 1,105.21, 1,525.13 and 607.84

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Solution

The fourth proportional to 1,105.21, 1,525.13 and 607.84 is: 838.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,105.21 : 1,525.13 = 607.84 : x
  2. Step 2: Convert to fraction form
    1,105.21/1,525.13 = 607.84/x
  3. Step 3: Cross multiply
    1,105.21x = 1,525.13 × 607.84
  4. Step 4: Simplify right side
    1,105.21x = 927,035.02
  5. Step 5: Solve for x
    x = 927,035.02/1,105.21
  6. Step 6: Final answer
    x = 838.79

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Double scale
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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.