Home / 9,378.30-12,941.52-5,186.28

Finding the Fourth Proportional to 9,378.30, 12,941.52 and 5,186.28

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Solution

The fourth proportional to 9,378.30, 12,941.52 and 5,186.28 is: 7,156.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,378.30 : 12,941.52 = 5,186.28 : x
  2. Step 2: Convert to fraction form
    9,378.30/12,941.52 = 5,186.28/x
  3. Step 3: Cross multiply
    9,378.30x = 12,941.52 × 5,186.28
  4. Step 4: Simplify right side
    9,378.30x = 67,118,346.35
  5. Step 5: Solve for x
    x = 67,118,346.35/9,378.30
  6. Step 6: Final answer
    x = 7,156.77

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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.