Home / 2,970.02-4,098.64-1,790.78

Finding the Fourth Proportional to 2,970.02, 4,098.64 and 1,790.78

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Solution

The fourth proportional to 2,970.02, 4,098.64 and 1,790.78 is: 2,471.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,970.02 : 4,098.64 = 1,790.78 : x
  2. Step 2: Convert to fraction form
    2,970.02/4,098.64 = 1,790.78/x
  3. Step 3: Cross multiply
    2,970.02x = 4,098.64 × 1,790.78
  4. Step 4: Simplify right side
    2,970.02x = 7,339,762.54
  5. Step 5: Solve for x
    x = 7,339,762.54/2,970.02
  6. Step 6: Final answer
    x = 2,471.28

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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.