Home / 3,129.16-4,317.51-1,870.62

Finding the Fourth Proportional to 3,129.16, 4,317.51 and 1,870.62

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Solution

The fourth proportional to 3,129.16, 4,317.51 and 1,870.62 is: 2,581.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.16 : 4,317.51 = 1,870.62 : x
  2. Step 2: Convert to fraction form
    3,129.16/4,317.51 = 1,870.62/x
  3. Step 3: Cross multiply
    3,129.16x = 4,317.51 × 1,870.62
  4. Step 4: Simplify right side
    3,129.16x = 8,076,420.56
  5. Step 5: Solve for x
    x = 8,076,420.56/3,129.16
  6. Step 6: Final answer
    x = 2,581.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.