Home / 1,424.23-2,136.69-693.64

Finding the Fourth Proportional to 1,424.23, 2,136.69 and 693.64

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Solution

The fourth proportional to 1,424.23, 2,136.69 and 693.64 is: 1,040.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424.23 : 2,136.69 = 693.64 : x
  2. Step 2: Convert to fraction form
    1,424.23/2,136.69 = 693.64/x
  3. Step 3: Cross multiply
    1,424.23x = 2,136.69 × 693.64
  4. Step 4: Simplify right side
    1,424.23x = 1,482,085.71
  5. Step 5: Solve for x
    x = 1,482,085.71/1,424.23
  6. Step 6: Final answer
    x = 1,040.62

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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.