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Finding the Fourth Proportional to 4,140.13, 6,210.21 and 1,020.21

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Solution

The fourth proportional to 4,140.13, 6,210.21 and 1,020.21 is: 1,530.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,140.13 : 6,210.21 = 1,020.21 : x
  2. Step 2: Convert to fraction form
    4,140.13/6,210.21 = 1,020.21/x
  3. Step 3: Cross multiply
    4,140.13x = 6,210.21 × 1,020.21
  4. Step 4: Simplify right side
    4,140.13x = 6,335,714.52
  5. Step 5: Solve for x
    x = 6,335,714.52/4,140.13
  6. Step 6: Final answer
    x = 1,530.32

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1.5x scale

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.