Home / 1,430.61-1,973.79-841.33

Finding the Fourth Proportional to 1,430.61, 1,973.79 and 841.33

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Solution

The fourth proportional to 1,430.61, 1,973.79 and 841.33 is: 1,160.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,430.61 : 1,973.79 = 841.33 : x
  2. Step 2: Convert to fraction form
    1,430.61/1,973.79 = 841.33/x
  3. Step 3: Cross multiply
    1,430.61x = 1,973.79 × 841.33
  4. Step 4: Simplify right side
    1,430.61x = 1,660,608.74
  5. Step 5: Solve for x
    x = 1,660,608.74/1,430.61
  6. Step 6: Final answer
    x = 1,160.77

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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.