Home / 1,929.40-2,894.10-1,783.60

Finding the Fourth Proportional to 1,929.40, 2,894.10 and 1,783.60

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Solution

The fourth proportional to 1,929.40, 2,894.10 and 1,783.60 is: 2,675.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.40 : 2,894.10 = 1,783.60 : x
  2. Step 2: Convert to fraction form
    1,929.40/2,894.10 = 1,783.60/x
  3. Step 3: Cross multiply
    1,929.40x = 2,894.10 × 1,783.60
  4. Step 4: Simplify right side
    1,929.40x = 5,161,916.76
  5. Step 5: Solve for x
    x = 5,161,916.76/1,929.40
  6. Step 6: Final answer
    x = 2,675.40

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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.