Home / 2,112.50-2,916.36-1,316.07

Finding the Fourth Proportional to 2,112.50, 2,916.36 and 1,316.07

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Solution

The fourth proportional to 2,112.50, 2,916.36 and 1,316.07 is: 1,816.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,112.50 : 2,916.36 = 1,316.07 : x
  2. Step 2: Convert to fraction form
    2,112.50/2,916.36 = 1,316.07/x
  3. Step 3: Cross multiply
    2,112.50x = 2,916.36 × 1,316.07
  4. Step 4: Simplify right side
    2,112.50x = 3,838,133.91
  5. Step 5: Solve for x
    x = 3,838,133.91/2,112.50
  6. Step 6: Final answer
    x = 1,816.87

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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.