Home / 1,560.37-2,154.09-971.10

Finding the Fourth Proportional to 1,560.37, 2,154.09 and 971.10

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Solution

The fourth proportional to 1,560.37, 2,154.09 and 971.10 is: 1,340.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,560.37 : 2,154.09 = 971.10 : x
  2. Step 2: Convert to fraction form
    1,560.37/2,154.09 = 971.10/x
  3. Step 3: Cross multiply
    1,560.37x = 2,154.09 × 971.10
  4. Step 4: Simplify right side
    1,560.37x = 2,091,836.80
  5. Step 5: Solve for x
    x = 2,091,836.80/1,560.37
  6. Step 6: Final answer
    x = 1,340.60

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Half scale
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Double scale
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Similar ratio
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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.