Home / 1,423.37-2,135.42-436.16

Finding the Fourth Proportional to 1,423.37, 2,135.42 and 436.16

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Solution

The fourth proportional to 1,423.37, 2,135.42 and 436.16 is: 654.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423.37 : 2,135.42 = 436.16 : x
  2. Step 2: Convert to fraction form
    1,423.37/2,135.42 = 436.16/x
  3. Step 3: Cross multiply
    1,423.37x = 2,135.42 × 436.16
  4. Step 4: Simplify right side
    1,423.37x = 931,384.79
  5. Step 5: Solve for x
    x = 931,384.79/1,423.37
  6. Step 6: Final answer
    x = 654.35

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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.