Home / 1,143.02-1,577.39-670.81

Finding the Fourth Proportional to 1,143.02, 1,577.39 and 670.81

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Solution

The fourth proportional to 1,143.02, 1,577.39 and 670.81 is: 925.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,143.02 : 1,577.39 = 670.81 : x
  2. Step 2: Convert to fraction form
    1,143.02/1,577.39 = 670.81/x
  3. Step 3: Cross multiply
    1,143.02x = 1,577.39 × 670.81
  4. Step 4: Simplify right side
    1,143.02x = 1,058,117.74
  5. Step 5: Solve for x
    x = 1,058,117.74/1,143.02
  6. Step 6: Final answer
    x = 925.72

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Double scale
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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.