Home / 1,693.63-2,336.90-947.60

Finding the Fourth Proportional to 1,693.63, 2,336.90 and 947.60

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Solution

The fourth proportional to 1,693.63, 2,336.90 and 947.60 is: 1,307.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,693.63 : 2,336.90 = 947.60 : x
  2. Step 2: Convert to fraction form
    1,693.63/2,336.90 = 947.60/x
  3. Step 3: Cross multiply
    1,693.63x = 2,336.90 × 947.60
  4. Step 4: Simplify right side
    1,693.63x = 2,214,434.76
  5. Step 5: Solve for x
    x = 2,214,434.76/1,693.63
  6. Step 6: Final answer
    x = 1,307.51

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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.