Home / 1,138.24-1,708.98-1,056.16

Finding the Fourth Proportional to 1,138.24, 1,708.98 and 1,056.16

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Solution

The fourth proportional to 1,138.24, 1,708.98 and 1,056.16 is: 1,585.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138.24 : 1,708.98 = 1,056.16 : x
  2. Step 2: Convert to fraction form
    1,138.24/1,708.98 = 1,056.16/x
  3. Step 3: Cross multiply
    1,138.24x = 1,708.98 × 1,056.16
  4. Step 4: Simplify right side
    1,138.24x = 1,804,956.32
  5. Step 5: Solve for x
    x = 1,804,956.32/1,138.24
  6. Step 6: Final answer
    x = 1,585.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.