Home / 1,702.21-2,349.38-1,105.45

Finding the Fourth Proportional to 1,702.21, 2,349.38 and 1,105.45

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Solution

The fourth proportional to 1,702.21, 2,349.38 and 1,105.45 is: 1,525.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,702.21 : 2,349.38 = 1,105.45 : x
  2. Step 2: Convert to fraction form
    1,702.21/2,349.38 = 1,105.45/x
  3. Step 3: Cross multiply
    1,702.21x = 2,349.38 × 1,105.45
  4. Step 4: Simplify right side
    1,702.21x = 2,597,122.12
  5. Step 5: Solve for x
    x = 2,597,122.12/1,702.21
  6. Step 6: Final answer
    x = 1,525.74

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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.