Home / 1,547.16-2,322.54-1,242.78

Finding the Fourth Proportional to 1,547.16, 2,322.54 and 1,242.78

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Solution

The fourth proportional to 1,547.16, 2,322.54 and 1,242.78 is: 1,865.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,547.16 : 2,322.54 = 1,242.78 : x
  2. Step 2: Convert to fraction form
    1,547.16/2,322.54 = 1,242.78/x
  3. Step 3: Cross multiply
    1,547.16x = 2,322.54 × 1,242.78
  4. Step 4: Simplify right side
    1,547.16x = 2,886,406.26
  5. Step 5: Solve for x
    x = 2,886,406.26/1,547.16
  6. Step 6: Final answer
    x = 1,865.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.