Home / 10,587.16-15,880.80-3,191.68

Finding the Fourth Proportional to 10,587.16, 15,880.80 and 3,191.68

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Solution

The fourth proportional to 10,587.16, 15,880.80 and 3,191.68 is: 4,787.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,587.16 : 15,880.80 = 3,191.68 : x
  2. Step 2: Convert to fraction form
    10,587.16/15,880.80 = 3,191.68/x
  3. Step 3: Cross multiply
    10,587.16x = 15,880.80 × 3,191.68
  4. Step 4: Simplify right side
    10,587.16x = 50,686,431.74
  5. Step 5: Solve for x
    x = 50,686,431.74/10,587.16
  6. Step 6: Final answer
    x = 4,787.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.