Home / 1,547.38-2,138.21-1,127.00

Finding the Fourth Proportional to 1,547.38, 2,138.21 and 1,127.00

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Solution

The fourth proportional to 1,547.38, 2,138.21 and 1,127.00 is: 1,557.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,547.38 : 2,138.21 = 1,127.00 : x
  2. Step 2: Convert to fraction form
    1,547.38/2,138.21 = 1,127.00/x
  3. Step 3: Cross multiply
    1,547.38x = 2,138.21 × 1,127.00
  4. Step 4: Simplify right side
    1,547.38x = 2,409,746.34
  5. Step 5: Solve for x
    x = 2,409,746.34/1,547.38
  6. Step 6: Final answer
    x = 1,557.31

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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.