Home / 1,693.10-2,336.30-947.04

Finding the Fourth Proportional to 1,693.10, 2,336.30 and 947.04

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Solution

The fourth proportional to 1,693.10, 2,336.30 and 947.04 is: 1,306.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,693.10 : 2,336.30 = 947.04 : x
  2. Step 2: Convert to fraction form
    1,693.10/2,336.30 = 947.04/x
  3. Step 3: Cross multiply
    1,693.10x = 2,336.30 × 947.04
  4. Step 4: Simplify right side
    1,693.10x = 2,212,569.55
  5. Step 5: Solve for x
    x = 2,212,569.55/1,693.10
  6. Step 6: Final answer
    x = 1,306.82

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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.