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Finding the Fourth Proportional to 1,929.16, 2,891.58 and 954.28

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Solution

The fourth proportional to 1,929.16, 2,891.58 and 954.28 is: 1,430.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.16 : 2,891.58 = 954.28 : x
  2. Step 2: Convert to fraction form
    1,929.16/2,891.58 = 954.28/x
  3. Step 3: Cross multiply
    1,929.16x = 2,891.58 × 954.28
  4. Step 4: Simplify right side
    1,929.16x = 2,759,376.96
  5. Step 5: Solve for x
    x = 2,759,376.96/1,929.16
  6. Step 6: Final answer
    x = 1,430.35

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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.