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Finding the Fourth Proportional to 1,501.52, 2,072.20 and 880.64

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Solution

The fourth proportional to 1,501.52, 2,072.20 and 880.64 is: 1,215.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,501.52 : 2,072.20 = 880.64 : x
  2. Step 2: Convert to fraction form
    1,501.52/2,072.20 = 880.64/x
  3. Step 3: Cross multiply
    1,501.52x = 2,072.20 × 880.64
  4. Step 4: Simplify right side
    1,501.52x = 1,824,862.21
  5. Step 5: Solve for x
    x = 1,824,862.21/1,501.52
  6. Step 6: Final answer
    x = 1,215.34

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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.