Home / 4,910.40-7,368.70-1,790.10

Finding the Fourth Proportional to 4,910.40, 7,368.70 and 1,790.10

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Solution

The fourth proportional to 4,910.40, 7,368.70 and 1,790.10 is: 2,686.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,910.40 : 7,368.70 = 1,790.10 : x
  2. Step 2: Convert to fraction form
    4,910.40/7,368.70 = 1,790.10/x
  3. Step 3: Cross multiply
    4,910.40x = 7,368.70 × 1,790.10
  4. Step 4: Simplify right side
    4,910.40x = 13,190,709.87
  5. Step 5: Solve for x
    x = 13,190,709.87/4,910.40
  6. Step 6: Final answer
    x = 2,686.28

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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.