Home / 9,370.63-12,931.47-5,178.88

Finding the Fourth Proportional to 9,370.63, 12,931.47 and 5,178.88

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Solution

The fourth proportional to 9,370.63, 12,931.47 and 5,178.88 is: 7,146.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,370.63 : 12,931.47 = 5,178.88 : x
  2. Step 2: Convert to fraction form
    9,370.63/12,931.47 = 5,178.88/x
  3. Step 3: Cross multiply
    9,370.63x = 12,931.47 × 5,178.88
  4. Step 4: Simplify right side
    9,370.63x = 66,970,440.80
  5. Step 5: Solve for x
    x = 66,970,440.80/9,370.63
  6. Step 6: Final answer
    x = 7,146.85

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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.