Home / 1,117.09-1,541.32-768.25

Finding the Fourth Proportional to 1,117.09, 1,541.32 and 768.25

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Solution

The fourth proportional to 1,117.09, 1,541.32 and 768.25 is: 1,060.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,117.09 : 1,541.32 = 768.25 : x
  2. Step 2: Convert to fraction form
    1,117.09/1,541.32 = 768.25/x
  3. Step 3: Cross multiply
    1,117.09x = 1,541.32 × 768.25
  4. Step 4: Simplify right side
    1,117.09x = 1,184,119.09
  5. Step 5: Solve for x
    x = 1,184,119.09/1,117.09
  6. Step 6: Final answer
    x = 1,060.00

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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.