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Finding the Fourth Proportional to 2,591.64, 3,888.27 and 948.69

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Solution

The fourth proportional to 2,591.64, 3,888.27 and 948.69 is: 1,423.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,591.64 : 3,888.27 = 948.69 : x
  2. Step 2: Convert to fraction form
    2,591.64/3,888.27 = 948.69/x
  3. Step 3: Cross multiply
    2,591.64x = 3,888.27 × 948.69
  4. Step 4: Simplify right side
    2,591.64x = 3,688,762.87
  5. Step 5: Solve for x
    x = 3,688,762.87/2,591.64
  6. Step 6: Final answer
    x = 1,423.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.