Home / 5,538.08-7,643.28-3,858.40

Finding the Fourth Proportional to 5,538.08, 7,643.28 and 3,858.40

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Solution

The fourth proportional to 5,538.08, 7,643.28 and 3,858.40 is: 5,325.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,538.08 : 7,643.28 = 3,858.40 : x
  2. Step 2: Convert to fraction form
    5,538.08/7,643.28 = 3,858.40/x
  3. Step 3: Cross multiply
    5,538.08x = 7,643.28 × 3,858.40
  4. Step 4: Simplify right side
    5,538.08x = 29,490,831.55
  5. Step 5: Solve for x
    x = 29,490,831.55/5,538.08
  6. Step 6: Final answer
    x = 5,325.10

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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.