Home / 1,431.64-1,973.55-1,010.62

Finding the Fourth Proportional to 1,431.64, 1,973.55 and 1,010.62

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Solution

The fourth proportional to 1,431.64, 1,973.55 and 1,010.62 is: 1,393.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431.64 : 1,973.55 = 1,010.62 : x
  2. Step 2: Convert to fraction form
    1,431.64/1,973.55 = 1,010.62/x
  3. Step 3: Cross multiply
    1,431.64x = 1,973.55 × 1,010.62
  4. Step 4: Simplify right side
    1,431.64x = 1,994,509.10
  5. Step 5: Solve for x
    x = 1,994,509.10/1,431.64
  6. Step 6: Final answer
    x = 1,393.16

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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.