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Finding the Fourth Proportional to 3,140.64, 4,328.64 and 2,353.32

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Solution

The fourth proportional to 3,140.64, 4,328.64 and 2,353.32 is: 3,243.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.64 : 4,328.64 = 2,353.32 : x
  2. Step 2: Convert to fraction form
    3,140.64/4,328.64 = 2,353.32/x
  3. Step 3: Cross multiply
    3,140.64x = 4,328.64 × 2,353.32
  4. Step 4: Simplify right side
    3,140.64x = 10,186,675.08
  5. Step 5: Solve for x
    x = 10,186,675.08/3,140.64
  6. Step 6: Final answer
    x = 3,243.50

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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.