Home / 3,720.55-5,580.44-1,870.91

Finding the Fourth Proportional to 3,720.55, 5,580.44 and 1,870.91

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Solution

The fourth proportional to 3,720.55, 5,580.44 and 1,870.91 is: 2,806.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.55 : 5,580.44 = 1,870.91 : x
  2. Step 2: Convert to fraction form
    3,720.55/5,580.44 = 1,870.91/x
  3. Step 3: Cross multiply
    3,720.55x = 5,580.44 × 1,870.91
  4. Step 4: Simplify right side
    3,720.55x = 10,440,498.22
  5. Step 5: Solve for x
    x = 10,440,498.22/3,720.55
  6. Step 6: Final answer
    x = 2,806.17

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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.