Home / 1,977.02-2,730.58-1,312.71

Finding the Fourth Proportional to 1,977.02, 2,730.58 and 1,312.71

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Solution

The fourth proportional to 1,977.02, 2,730.58 and 1,312.71 is: 1,813.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,977.02 : 2,730.58 = 1,312.71 : x
  2. Step 2: Convert to fraction form
    1,977.02/2,730.58 = 1,312.71/x
  3. Step 3: Cross multiply
    1,977.02x = 2,730.58 × 1,312.71
  4. Step 4: Simplify right side
    1,977.02x = 3,584,466.63
  5. Step 5: Solve for x
    x = 3,584,466.63/1,977.02
  6. Step 6: Final answer
    x = 1,813.07

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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.