Home / 1,574.32-2,172.34-875.70

Finding the Fourth Proportional to 1,574.32, 2,172.34 and 875.70

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Solution

The fourth proportional to 1,574.32, 2,172.34 and 875.70 is: 1,208.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,574.32 : 2,172.34 = 875.70 : x
  2. Step 2: Convert to fraction form
    1,574.32/2,172.34 = 875.70/x
  3. Step 3: Cross multiply
    1,574.32x = 2,172.34 × 875.70
  4. Step 4: Simplify right side
    1,574.32x = 1,902,318.14
  5. Step 5: Solve for x
    x = 1,902,318.14/1,574.32
  6. Step 6: Final answer
    x = 1,208.34

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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.