Home / 5,428.25-7,491.36-3,070.40

Finding the Fourth Proportional to 5,428.25, 7,491.36 and 3,070.40

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Solution

The fourth proportional to 5,428.25, 7,491.36 and 3,070.40 is: 4,237.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.25 : 7,491.36 = 3,070.40 : x
  2. Step 2: Convert to fraction form
    5,428.25/7,491.36 = 3,070.40/x
  3. Step 3: Cross multiply
    5,428.25x = 7,491.36 × 3,070.40
  4. Step 4: Simplify right side
    5,428.25x = 23,001,471.74
  5. Step 5: Solve for x
    x = 23,001,471.74/5,428.25
  6. Step 6: Final answer
    x = 4,237.36

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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.