Home / 1,341.40-1,847.66-947.74

Finding the Fourth Proportional to 1,341.40, 1,847.66 and 947.74

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Solution

The fourth proportional to 1,341.40, 1,847.66 and 947.74 is: 1,305.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,341.40 : 1,847.66 = 947.74 : x
  2. Step 2: Convert to fraction form
    1,341.40/1,847.66 = 947.74/x
  3. Step 3: Cross multiply
    1,341.40x = 1,847.66 × 947.74
  4. Step 4: Simplify right side
    1,341.40x = 1,751,101.29
  5. Step 5: Solve for x
    x = 1,751,101.29/1,341.40
  6. Step 6: Final answer
    x = 1,305.43

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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.