Home / 1,635.19-2,255.55-971.60

Finding the Fourth Proportional to 1,635.19, 2,255.55 and 971.60

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Solution

The fourth proportional to 1,635.19, 2,255.55 and 971.60 is: 1,340.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,635.19 : 2,255.55 = 971.60 : x
  2. Step 2: Convert to fraction form
    1,635.19/2,255.55 = 971.60/x
  3. Step 3: Cross multiply
    1,635.19x = 2,255.55 × 971.60
  4. Step 4: Simplify right side
    1,635.19x = 2,191,477.46
  5. Step 5: Solve for x
    x = 2,191,477.46/1,635.19
  6. Step 6: Final answer
    x = 1,340.20

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Half scale
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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.