Home / 1,421.24-2,133.09-556.16

Finding the Fourth Proportional to 1,421.24, 2,133.09 and 556.16

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Solution

The fourth proportional to 1,421.24, 2,133.09 and 556.16 is: 834.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421.24 : 2,133.09 = 556.16 : x
  2. Step 2: Convert to fraction form
    1,421.24/2,133.09 = 556.16/x
  3. Step 3: Cross multiply
    1,421.24x = 2,133.09 × 556.16
  4. Step 4: Simplify right side
    1,421.24x = 1,186,328.67
  5. Step 5: Solve for x
    x = 1,186,328.67/1,421.24
  6. Step 6: Final answer
    x = 834.72

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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.