Home / 1,187.37-1,637.04-973.90

Finding the Fourth Proportional to 1,187.37, 1,637.04 and 973.90

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Solution

The fourth proportional to 1,187.37, 1,637.04 and 973.90 is: 1,342.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187.37 : 1,637.04 = 973.90 : x
  2. Step 2: Convert to fraction form
    1,187.37/1,637.04 = 973.90/x
  3. Step 3: Cross multiply
    1,187.37x = 1,637.04 × 973.90
  4. Step 4: Simplify right side
    1,187.37x = 1,594,305.07
  5. Step 5: Solve for x
    x = 1,594,305.07/1,187.37
  6. Step 6: Final answer
    x = 1,342.72

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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.