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Finding the Fourth Proportional to 1,562.60, 2,157.13 and 899.32

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Solution

The fourth proportional to 1,562.60, 2,157.13 and 899.32 is: 1,241.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,562.60 : 2,157.13 = 899.32 : x
  2. Step 2: Convert to fraction form
    1,562.60/2,157.13 = 899.32/x
  3. Step 3: Cross multiply
    1,562.60x = 2,157.13 × 899.32
  4. Step 4: Simplify right side
    1,562.60x = 1,939,945.66
  5. Step 5: Solve for x
    x = 1,939,945.66/1,562.60
  6. Step 6: Final answer
    x = 1,241.49

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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.