Home / 1,670.32-2,506.60-631.28

Finding the Fourth Proportional to 1,670.32, 2,506.60 and 631.28

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Solution

The fourth proportional to 1,670.32, 2,506.60 and 631.28 is: 947.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,670.32 : 2,506.60 = 631.28 : x
  2. Step 2: Convert to fraction form
    1,670.32/2,506.60 = 631.28/x
  3. Step 3: Cross multiply
    1,670.32x = 2,506.60 × 631.28
  4. Step 4: Simplify right side
    1,670.32x = 1,582,366.45
  5. Step 5: Solve for x
    x = 1,582,366.45/1,670.32
  6. Step 6: Final answer
    x = 947.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.