Home / 5,428.50-7,491.63-3,070.86

Finding the Fourth Proportional to 5,428.50, 7,491.63 and 3,070.86

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Solution

The fourth proportional to 5,428.50, 7,491.63 and 3,070.86 is: 4,237.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.50 : 7,491.63 = 3,070.86 : x
  2. Step 2: Convert to fraction form
    5,428.50/7,491.63 = 3,070.86/x
  3. Step 3: Cross multiply
    5,428.50x = 7,491.63 × 3,070.86
  4. Step 4: Simplify right side
    5,428.50x = 23,005,746.90
  5. Step 5: Solve for x
    x = 23,005,746.90/5,428.50
  6. Step 6: Final answer
    x = 4,237.96

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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.