Home / 3,681.18-5,079.50-2,621.70

Finding the Fourth Proportional to 3,681.18, 5,079.50 and 2,621.70

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Solution

The fourth proportional to 3,681.18, 5,079.50 and 2,621.70 is: 3,617.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,681.18 : 5,079.50 = 2,621.70 : x
  2. Step 2: Convert to fraction form
    3,681.18/5,079.50 = 2,621.70/x
  3. Step 3: Cross multiply
    3,681.18x = 5,079.50 × 2,621.70
  4. Step 4: Simplify right side
    3,681.18x = 13,316,925.15
  5. Step 5: Solve for x
    x = 13,316,925.15/3,681.18
  6. Step 6: Final answer
    x = 3,617.57

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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.