Home / 1,430.73-1,975.01-1,210.82

Finding the Fourth Proportional to 1,430.73, 1,975.01 and 1,210.82

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Solution

The fourth proportional to 1,430.73, 1,975.01 and 1,210.82 is: 1,671.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,430.73 : 1,975.01 = 1,210.82 : x
  2. Step 2: Convert to fraction form
    1,430.73/1,975.01 = 1,210.82/x
  3. Step 3: Cross multiply
    1,430.73x = 1,975.01 × 1,210.82
  4. Step 4: Simplify right side
    1,430.73x = 2,391,365.68
  5. Step 5: Solve for x
    x = 2,391,365.68/1,430.73
  6. Step 6: Final answer
    x = 1,671.43

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1.5x scale

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.