Home / 1,946.14-2,919.27-647.56

Finding the Fourth Proportional to 1,946.14, 2,919.27 and 647.56

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Solution

The fourth proportional to 1,946.14, 2,919.27 and 647.56 is: 971.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,946.14 : 2,919.27 = 647.56 : x
  2. Step 2: Convert to fraction form
    1,946.14/2,919.27 = 647.56/x
  3. Step 3: Cross multiply
    1,946.14x = 2,919.27 × 647.56
  4. Step 4: Simplify right side
    1,946.14x = 1,890,402.48
  5. Step 5: Solve for x
    x = 1,890,402.48/1,946.14
  6. Step 6: Final answer
    x = 971.36

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1.5x scale

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.