Home / 1,693.38-2,336.58-947.31

Finding the Fourth Proportional to 1,693.38, 2,336.58 and 947.31

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Solution

The fourth proportional to 1,693.38, 2,336.58 and 947.31 is: 1,307.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,693.38 : 2,336.58 = 947.31 : x
  2. Step 2: Convert to fraction form
    1,693.38/2,336.58 = 947.31/x
  3. Step 3: Cross multiply
    1,693.38x = 2,336.58 × 947.31
  4. Step 4: Simplify right side
    1,693.38x = 2,213,465.60
  5. Step 5: Solve for x
    x = 2,213,465.60/1,693.38
  6. Step 6: Final answer
    x = 1,307.13

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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.