Home / 1,812.96-2,715.57-1,117.98

Finding the Fourth Proportional to 1,812.96, 2,715.57 and 1,117.98

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Solution

The fourth proportional to 1,812.96, 2,715.57 and 1,117.98 is: 1,674.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.96 : 2,715.57 = 1,117.98 : x
  2. Step 2: Convert to fraction form
    1,812.96/2,715.57 = 1,117.98/x
  3. Step 3: Cross multiply
    1,812.96x = 2,715.57 × 1,117.98
  4. Step 4: Simplify right side
    1,812.96x = 3,035,952.95
  5. Step 5: Solve for x
    x = 3,035,952.95/1,812.96
  6. Step 6: Final answer
    x = 1,674.58

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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.