Home / 5,685.12-7,838.91-4,271.40

Finding the Fourth Proportional to 5,685.12, 7,838.91 and 4,271.40

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Solution

The fourth proportional to 5,685.12, 7,838.91 and 4,271.40 is: 5,889.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,685.12 : 7,838.91 = 4,271.40 : x
  2. Step 2: Convert to fraction form
    5,685.12/7,838.91 = 4,271.40/x
  3. Step 3: Cross multiply
    5,685.12x = 7,838.91 × 4,271.40
  4. Step 4: Simplify right side
    5,685.12x = 33,483,120.17
  5. Step 5: Solve for x
    x = 33,483,120.17/5,685.12
  6. Step 6: Final answer
    x = 5,889.61

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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.