Home / 8,975.81-12,386.91-5,617.55

Finding the Fourth Proportional to 8,975.81, 12,386.91 and 5,617.55

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Solution

The fourth proportional to 8,975.81, 12,386.91 and 5,617.55 is: 7,752.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,975.81 : 12,386.91 = 5,617.55 : x
  2. Step 2: Convert to fraction form
    8,975.81/12,386.91 = 5,617.55/x
  3. Step 3: Cross multiply
    8,975.81x = 12,386.91 × 5,617.55
  4. Step 4: Simplify right side
    8,975.81x = 69,584,103.19
  5. Step 5: Solve for x
    x = 69,584,103.19/8,975.81
  6. Step 6: Final answer
    x = 7,752.40

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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.