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Finding the Fourth Proportional to 1,688.32, 2,329.28 and 952.32

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Solution

The fourth proportional to 1,688.32, 2,329.28 and 952.32 is: 1,313.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.32 : 2,329.28 = 952.32 : x
  2. Step 2: Convert to fraction form
    1,688.32/2,329.28 = 952.32/x
  3. Step 3: Cross multiply
    1,688.32x = 2,329.28 × 952.32
  4. Step 4: Simplify right side
    1,688.32x = 2,218,219.93
  5. Step 5: Solve for x
    x = 2,218,219.93/1,688.32
  6. Step 6: Final answer
    x = 1,313.86

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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.