Home / 1,368.39-1,886.80-1,235.57

Finding the Fourth Proportional to 1,368.39, 1,886.80 and 1,235.57

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Solution

The fourth proportional to 1,368.39, 1,886.80 and 1,235.57 is: 1,703.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368.39 : 1,886.80 = 1,235.57 : x
  2. Step 2: Convert to fraction form
    1,368.39/1,886.80 = 1,235.57/x
  3. Step 3: Cross multiply
    1,368.39x = 1,886.80 × 1,235.57
  4. Step 4: Simplify right side
    1,368.39x = 2,331,272.76
  5. Step 5: Solve for x
    x = 2,331,272.76/1,368.39
  6. Step 6: Final answer
    x = 1,703.66

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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.