Home / 1,423.08-2,134.07-435.60

Finding the Fourth Proportional to 1,423.08, 2,134.07 and 435.60

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Solution

The fourth proportional to 1,423.08, 2,134.07 and 435.60 is: 653.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423.08 : 2,134.07 = 435.60 : x
  2. Step 2: Convert to fraction form
    1,423.08/2,134.07 = 435.60/x
  3. Step 3: Cross multiply
    1,423.08x = 2,134.07 × 435.60
  4. Step 4: Simplify right side
    1,423.08x = 929,598.71
  5. Step 5: Solve for x
    x = 929,598.71/1,423.08
  6. Step 6: Final answer
    x = 653.23

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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.