Home / 5,280.10-7,912.95-4,308.10

Finding the Fourth Proportional to 5,280.10, 7,912.95 and 4,308.10

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Solution

The fourth proportional to 5,280.10, 7,912.95 and 4,308.10 is: 6,456.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.10 : 7,912.95 = 4,308.10 : x
  2. Step 2: Convert to fraction form
    5,280.10/7,912.95 = 4,308.10/x
  3. Step 3: Cross multiply
    5,280.10x = 7,912.95 × 4,308.10
  4. Step 4: Simplify right side
    5,280.10x = 34,089,779.90
  5. Step 5: Solve for x
    x = 34,089,779.90/5,280.10
  6. Step 6: Final answer
    x = 6,456.28

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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.