Home / 4,905.70-7,358.56-1,785.80

Finding the Fourth Proportional to 4,905.70, 7,358.56 and 1,785.80

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Solution

The fourth proportional to 4,905.70, 7,358.56 and 1,785.80 is: 2,678.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,905.70 : 7,358.56 = 1,785.80 : x
  2. Step 2: Convert to fraction form
    4,905.70/7,358.56 = 1,785.80/x
  3. Step 3: Cross multiply
    4,905.70x = 7,358.56 × 1,785.80
  4. Step 4: Simplify right side
    4,905.70x = 13,140,916.45
  5. Step 5: Solve for x
    x = 13,140,916.45/4,905.70
  6. Step 6: Final answer
    x = 2,678.70

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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.