Home / 3,178.16-4,768.56-1,715.60

Finding the Fourth Proportional to 3,178.16, 4,768.56 and 1,715.60

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Solution

The fourth proportional to 3,178.16, 4,768.56 and 1,715.60 is: 2,574.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.16 : 4,768.56 = 1,715.60 : x
  2. Step 2: Convert to fraction form
    3,178.16/4,768.56 = 1,715.60/x
  3. Step 3: Cross multiply
    3,178.16x = 4,768.56 × 1,715.60
  4. Step 4: Simplify right side
    3,178.16x = 8,180,941.54
  5. Step 5: Solve for x
    x = 8,180,941.54/3,178.16
  6. Step 6: Final answer
    x = 2,574.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.