Home / 1,547.28-2,135.28-848.70

Finding the Fourth Proportional to 1,547.28, 2,135.28 and 848.70

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Solution

The fourth proportional to 1,547.28, 2,135.28 and 848.70 is: 1,171.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,547.28 : 2,135.28 = 848.70 : x
  2. Step 2: Convert to fraction form
    1,547.28/2,135.28 = 848.70/x
  3. Step 3: Cross multiply
    1,547.28x = 2,135.28 × 848.70
  4. Step 4: Simplify right side
    1,547.28x = 1,812,212.14
  5. Step 5: Solve for x
    x = 1,812,212.14/1,547.28
  6. Step 6: Final answer
    x = 1,171.22

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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.