Home / 1,693.47-2,337.03-947.55

Finding the Fourth Proportional to 1,693.47, 2,337.03 and 947.55

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Solution

The fourth proportional to 1,693.47, 2,337.03 and 947.55 is: 1,307.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,693.47 : 2,337.03 = 947.55 : x
  2. Step 2: Convert to fraction form
    1,693.47/2,337.03 = 947.55/x
  3. Step 3: Cross multiply
    1,693.47x = 2,337.03 × 947.55
  4. Step 4: Simplify right side
    1,693.47x = 2,214,452.78
  5. Step 5: Solve for x
    x = 2,214,452.78/1,693.47
  6. Step 6: Final answer
    x = 1,307.64

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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.