Home / 1,319.36-1,822.27-1,054.72

Finding the Fourth Proportional to 1,319.36, 1,822.27 and 1,054.72

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Solution

The fourth proportional to 1,319.36, 1,822.27 and 1,054.72 is: 1,456.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319.36 : 1,822.27 = 1,054.72 : x
  2. Step 2: Convert to fraction form
    1,319.36/1,822.27 = 1,054.72/x
  3. Step 3: Cross multiply
    1,319.36x = 1,822.27 × 1,054.72
  4. Step 4: Simplify right side
    1,319.36x = 1,921,988.21
  5. Step 5: Solve for x
    x = 1,921,988.21/1,319.36
  6. Step 6: Final answer
    x = 1,456.76

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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.