Home / 3,720.29-5,580.57-1,870.40

Finding the Fourth Proportional to 3,720.29, 5,580.57 and 1,870.40

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Solution

The fourth proportional to 3,720.29, 5,580.57 and 1,870.40 is: 2,805.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.29 : 5,580.57 = 1,870.40 : x
  2. Step 2: Convert to fraction form
    3,720.29/5,580.57 = 1,870.40/x
  3. Step 3: Cross multiply
    3,720.29x = 5,580.57 × 1,870.40
  4. Step 4: Simplify right side
    3,720.29x = 10,437,877.49
  5. Step 5: Solve for x
    x = 10,437,877.49/3,720.29
  6. Step 6: Final answer
    x = 2,805.66

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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.