Home / 3,435.40-4,740.78-2,256.40

Finding the Fourth Proportional to 3,435.40, 4,740.78 and 2,256.40

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Solution

The fourth proportional to 3,435.40, 4,740.78 and 2,256.40 is: 3,113.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,435.40 : 4,740.78 = 2,256.40 : x
  2. Step 2: Convert to fraction form
    3,435.40/4,740.78 = 2,256.40/x
  3. Step 3: Cross multiply
    3,435.40x = 4,740.78 × 2,256.40
  4. Step 4: Simplify right side
    3,435.40x = 10,697,095.99
  5. Step 5: Solve for x
    x = 10,697,095.99/3,435.40
  6. Step 6: Final answer
    x = 3,113.78

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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.