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Finding the Fourth Proportional to 1,323.64, 1,826.63 and 931.35

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Solution

The fourth proportional to 1,323.64, 1,826.63 and 931.35 is: 1,285.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323.64 : 1,826.63 = 931.35 : x
  2. Step 2: Convert to fraction form
    1,323.64/1,826.63 = 931.35/x
  3. Step 3: Cross multiply
    1,323.64x = 1,826.63 × 931.35
  4. Step 4: Simplify right side
    1,323.64x = 1,701,232.50
  5. Step 5: Solve for x
    x = 1,701,232.50/1,323.64
  6. Step 6: Final answer
    x = 1,285.27

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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.