Home / 1,430.35-1,971.58-1,010.04

Finding the Fourth Proportional to 1,430.35, 1,971.58 and 1,010.04

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Solution

The fourth proportional to 1,430.35, 1,971.58 and 1,010.04 is: 1,392.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,430.35 : 1,971.58 = 1,010.04 : x
  2. Step 2: Convert to fraction form
    1,430.35/1,971.58 = 1,010.04/x
  3. Step 3: Cross multiply
    1,430.35x = 1,971.58 × 1,010.04
  4. Step 4: Simplify right side
    1,430.35x = 1,991,366.64
  5. Step 5: Solve for x
    x = 1,991,366.64/1,430.35
  6. Step 6: Final answer
    x = 1,392.22

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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.