Home / 5,428.09-7,490.91-3,070.36

Finding the Fourth Proportional to 5,428.09, 7,490.91 and 3,070.36

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Solution

The fourth proportional to 5,428.09, 7,490.91 and 3,070.36 is: 4,237.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.09 : 7,490.91 = 3,070.36 : x
  2. Step 2: Convert to fraction form
    5,428.09/7,490.91 = 3,070.36/x
  3. Step 3: Cross multiply
    5,428.09x = 7,490.91 × 3,070.36
  4. Step 4: Simplify right side
    5,428.09x = 22,999,790.43
  5. Step 5: Solve for x
    x = 22,999,790.43/5,428.09
  6. Step 6: Final answer
    x = 4,237.18

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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.