Home / 1,434.72-2,152.07-947.65

Finding the Fourth Proportional to 1,434.72, 2,152.07 and 947.65

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Solution

The fourth proportional to 1,434.72, 2,152.07 and 947.65 is: 1,421.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434.72 : 2,152.07 = 947.65 : x
  2. Step 2: Convert to fraction form
    1,434.72/2,152.07 = 947.65/x
  3. Step 3: Cross multiply
    1,434.72x = 2,152.07 × 947.65
  4. Step 4: Simplify right side
    1,434.72x = 2,039,404.40
  5. Step 5: Solve for x
    x = 2,039,404.40/1,434.72
  6. Step 6: Final answer
    x = 1,421.47

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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.