Home / 2,981.25-4,114.53-1,802.70

Finding the Fourth Proportional to 2,981.25, 4,114.53 and 1,802.70

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Solution

The fourth proportional to 2,981.25, 4,114.53 and 1,802.70 is: 2,487.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.25 : 4,114.53 = 1,802.70 : x
  2. Step 2: Convert to fraction form
    2,981.25/4,114.53 = 1,802.70/x
  3. Step 3: Cross multiply
    2,981.25x = 4,114.53 × 1,802.70
  4. Step 4: Simplify right side
    2,981.25x = 7,417,263.23
  5. Step 5: Solve for x
    x = 7,417,263.23/2,981.25
  6. Step 6: Final answer
    x = 2,487.97

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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.