Home / 5,140.08-7,709.76-1,442.16

Finding the Fourth Proportional to 5,140.08, 7,709.76 and 1,442.16

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Solution

The fourth proportional to 5,140.08, 7,709.76 and 1,442.16 is: 2,163.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,140.08 : 7,709.76 = 1,442.16 : x
  2. Step 2: Convert to fraction form
    5,140.08/7,709.76 = 1,442.16/x
  3. Step 3: Cross multiply
    5,140.08x = 7,709.76 × 1,442.16
  4. Step 4: Simplify right side
    5,140.08x = 11,118,707.48
  5. Step 5: Solve for x
    x = 11,118,707.48/5,140.08
  6. Step 6: Final answer
    x = 2,163.14

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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.