Home / 1,515.64-2,271.09-1,054.32

Finding the Fourth Proportional to 1,515.64, 2,271.09 and 1,054.32

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Solution

The fourth proportional to 1,515.64, 2,271.09 and 1,054.32 is: 1,579.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.64 : 2,271.09 = 1,054.32 : x
  2. Step 2: Convert to fraction form
    1,515.64/2,271.09 = 1,054.32/x
  3. Step 3: Cross multiply
    1,515.64x = 2,271.09 × 1,054.32
  4. Step 4: Simplify right side
    1,515.64x = 2,394,455.61
  5. Step 5: Solve for x
    x = 2,394,455.61/1,515.64
  6. Step 6: Final answer
    x = 1,579.83

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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.