Home / 1,564.35-2,157.47-1,316.25

Finding the Fourth Proportional to 1,564.35, 2,157.47 and 1,316.25

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Solution

The fourth proportional to 1,564.35, 2,157.47 and 1,316.25 is: 1,815.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,564.35 : 2,157.47 = 1,316.25 : x
  2. Step 2: Convert to fraction form
    1,564.35/2,157.47 = 1,316.25/x
  3. Step 3: Cross multiply
    1,564.35x = 2,157.47 × 1,316.25
  4. Step 4: Simplify right side
    1,564.35x = 2,839,768.24
  5. Step 5: Solve for x
    x = 2,839,768.24/1,564.35
  6. Step 6: Final answer
    x = 1,815.31

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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.