Home / 4,677.28-6,454.38-2,688.40

Finding the Fourth Proportional to 4,677.28, 6,454.38 and 2,688.40

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Solution

The fourth proportional to 4,677.28, 6,454.38 and 2,688.40 is: 3,709.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,677.28 : 6,454.38 = 2,688.40 : x
  2. Step 2: Convert to fraction form
    4,677.28/6,454.38 = 2,688.40/x
  3. Step 3: Cross multiply
    4,677.28x = 6,454.38 × 2,688.40
  4. Step 4: Simplify right side
    4,677.28x = 17,351,955.19
  5. Step 5: Solve for x
    x = 17,351,955.19/4,677.28
  6. Step 6: Final answer
    x = 3,709.84

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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.