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Finding the Fourth Proportional to 1,348.57, 1,858.91 and 1,235.58

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Solution

The fourth proportional to 1,348.57, 1,858.91 and 1,235.58 is: 1,703.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,348.57 : 1,858.91 = 1,235.58 : x
  2. Step 2: Convert to fraction form
    1,348.57/1,858.91 = 1,235.58/x
  3. Step 3: Cross multiply
    1,348.57x = 1,858.91 × 1,235.58
  4. Step 4: Simplify right side
    1,348.57x = 2,296,825.81
  5. Step 5: Solve for x
    x = 2,296,825.81/1,348.57
  6. Step 6: Final answer
    x = 1,703.16

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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.