Home / 1,693.18-2,336.36-947.10

Finding the Fourth Proportional to 1,693.18, 2,336.36 and 947.10

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Solution

The fourth proportional to 1,693.18, 2,336.36 and 947.10 is: 1,306.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,693.18 : 2,336.36 = 947.10 : x
  2. Step 2: Convert to fraction form
    1,693.18/2,336.36 = 947.10/x
  3. Step 3: Cross multiply
    1,693.18x = 2,336.36 × 947.10
  4. Step 4: Simplify right side
    1,693.18x = 2,212,766.56
  5. Step 5: Solve for x
    x = 2,212,766.56/1,693.18
  6. Step 6: Final answer
    x = 1,306.87

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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.