Home / 1,560.21-2,153.99-1,164.05

Finding the Fourth Proportional to 1,560.21, 2,153.99 and 1,164.05

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Solution

The fourth proportional to 1,560.21, 2,153.99 and 1,164.05 is: 1,607.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,560.21 : 2,153.99 = 1,164.05 : x
  2. Step 2: Convert to fraction form
    1,560.21/2,153.99 = 1,164.05/x
  3. Step 3: Cross multiply
    1,560.21x = 2,153.99 × 1,164.05
  4. Step 4: Simplify right side
    1,560.21x = 2,507,345.73
  5. Step 5: Solve for x
    x = 2,507,345.73/1,560.21
  6. Step 6: Final answer
    x = 1,607.05

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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.