Home / 9,370.69-12,931.55-5,178.94

Finding the Fourth Proportional to 9,370.69, 12,931.55 and 5,178.94

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Solution

The fourth proportional to 9,370.69, 12,931.55 and 5,178.94 is: 7,146.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,370.69 : 12,931.55 = 5,178.94 : x
  2. Step 2: Convert to fraction form
    9,370.69/12,931.55 = 5,178.94/x
  3. Step 3: Cross multiply
    9,370.69x = 12,931.55 × 5,178.94
  4. Step 4: Simplify right side
    9,370.69x = 66,971,682.75
  5. Step 5: Solve for x
    x = 66,971,682.75/9,370.69
  6. Step 6: Final answer
    x = 7,146.93

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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.