Home / 5,136.74-7,088.78-2,898.72

Finding the Fourth Proportional to 5,136.74, 7,088.78 and 2,898.72

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Solution

The fourth proportional to 5,136.74, 7,088.78 and 2,898.72 is: 4,000.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,136.74 : 7,088.78 = 2,898.72 : x
  2. Step 2: Convert to fraction form
    5,136.74/7,088.78 = 2,898.72/x
  3. Step 3: Cross multiply
    5,136.74x = 7,088.78 × 2,898.72
  4. Step 4: Simplify right side
    5,136.74x = 20,548,388.36
  5. Step 5: Solve for x
    x = 20,548,388.36/5,136.74
  6. Step 6: Final answer
    x = 4,000.28

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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.