Home / 1,547.36-2,136.48-1,237.76

Finding the Fourth Proportional to 1,547.36, 2,136.48 and 1,237.76

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Solution

The fourth proportional to 1,547.36, 2,136.48 and 1,237.76 is: 1,709.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,547.36 : 2,136.48 = 1,237.76 : x
  2. Step 2: Convert to fraction form
    1,547.36/2,136.48 = 1,237.76/x
  3. Step 3: Cross multiply
    1,547.36x = 2,136.48 × 1,237.76
  4. Step 4: Simplify right side
    1,547.36x = 2,644,449.48
  5. Step 5: Solve for x
    x = 2,644,449.48/1,547.36
  6. Step 6: Final answer
    x = 1,709.01

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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.