Home / 5,210.16-7,820.64-3,490.80

Finding the Fourth Proportional to 5,210.16, 7,820.64 and 3,490.80

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Solution

The fourth proportional to 5,210.16, 7,820.64 and 3,490.80 is: 5,239.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,210.16 : 7,820.64 = 3,490.80 : x
  2. Step 2: Convert to fraction form
    5,210.16/7,820.64 = 3,490.80/x
  3. Step 3: Cross multiply
    5,210.16x = 7,820.64 × 3,490.80
  4. Step 4: Simplify right side
    5,210.16x = 27,300,290.11
  5. Step 5: Solve for x
    x = 27,300,290.11/5,210.16
  6. Step 6: Final answer
    x = 5,239.82

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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.