Home / 1,929.84-2,895.30-1,639.40

Finding the Fourth Proportional to 1,929.84, 2,895.30 and 1,639.40

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Solution

The fourth proportional to 1,929.84, 2,895.30 and 1,639.40 is: 2,459.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.84 : 2,895.30 = 1,639.40 : x
  2. Step 2: Convert to fraction form
    1,929.84/2,895.30 = 1,639.40/x
  3. Step 3: Cross multiply
    1,929.84x = 2,895.30 × 1,639.40
  4. Step 4: Simplify right side
    1,929.84x = 4,746,540.34
  5. Step 5: Solve for x
    x = 4,746,540.34/1,929.84
  6. Step 6: Final answer
    x = 2,459.55

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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.