Home / 11,585.79-15,988.37-6,280.65

Finding the Fourth Proportional to 11,585.79, 15,988.37 and 6,280.65

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Solution

The fourth proportional to 11,585.79, 15,988.37 and 6,280.65 is: 8,667.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,585.79 : 15,988.37 = 6,280.65 : x
  2. Step 2: Convert to fraction form
    11,585.79/15,988.37 = 6,280.65/x
  3. Step 3: Cross multiply
    11,585.79x = 15,988.37 × 6,280.65
  4. Step 4: Simplify right side
    11,585.79x = 100,417,324.64
  5. Step 5: Solve for x
    x = 100,417,324.64/11,585.79
  6. Step 6: Final answer
    x = 8,667.28

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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.