Home / 1,362.80-2,045.02-1,312.58

Finding the Fourth Proportional to 1,362.80, 2,045.02 and 1,312.58

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Solution

The fourth proportional to 1,362.80, 2,045.02 and 1,312.58 is: 1,969.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,362.80 : 2,045.02 = 1,312.58 : x
  2. Step 2: Convert to fraction form
    1,362.80/2,045.02 = 1,312.58/x
  3. Step 3: Cross multiply
    1,362.80x = 2,045.02 × 1,312.58
  4. Step 4: Simplify right side
    1,362.80x = 2,684,252.35
  5. Step 5: Solve for x
    x = 2,684,252.35/1,362.80
  6. Step 6: Final answer
    x = 1,969.66

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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.