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Finding the Fourth Proportional to 2,359.66, 3,256.18 and 1,311.74

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Solution

The fourth proportional to 2,359.66, 3,256.18 and 1,311.74 is: 1,810.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,359.66 : 3,256.18 = 1,311.74 : x
  2. Step 2: Convert to fraction form
    2,359.66/3,256.18 = 1,311.74/x
  3. Step 3: Cross multiply
    2,359.66x = 3,256.18 × 1,311.74
  4. Step 4: Simplify right side
    2,359.66x = 4,271,261.55
  5. Step 5: Solve for x
    x = 4,271,261.55/2,359.66
  6. Step 6: Final answer
    x = 1,810.12

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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.