Home / 2,116-2,916.56-1,485.28

Finding the Fourth Proportional to 2,116, 2,916.56 and 1,485.28

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Solution

The fourth proportional to 2,116, 2,916.56 and 1,485.28 is: 2,047.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116 : 2,916.56 = 1,485.28 : x
  2. Step 2: Convert to fraction form
    2,116/2,916.56 = 1,485.28/x
  3. Step 3: Cross multiply
    2,116x = 2,916.56 × 1,485.28
  4. Step 4: Simplify right side
    2,116x = 4,331,908.24
  5. Step 5: Solve for x
    x = 4,331,908.24/2,116
  6. Step 6: Final answer
    x = 2,047.22

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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.