Home / 4,210.28-6,314.88-1,287.80

Finding the Fourth Proportional to 4,210.28, 6,314.88 and 1,287.80

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Solution

The fourth proportional to 4,210.28, 6,314.88 and 1,287.80 is: 1,931.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,210.28 : 6,314.88 = 1,287.80 : x
  2. Step 2: Convert to fraction form
    4,210.28/6,314.88 = 1,287.80/x
  3. Step 3: Cross multiply
    4,210.28x = 6,314.88 × 1,287.80
  4. Step 4: Simplify right side
    4,210.28x = 8,132,302.46
  5. Step 5: Solve for x
    x = 8,132,302.46/4,210.28
  6. Step 6: Final answer
    x = 1,931.53

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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.