Home / 1,127.84-1,556.28-630.50

Finding the Fourth Proportional to 1,127.84, 1,556.28 and 630.50

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Solution

The fourth proportional to 1,127.84, 1,556.28 and 630.50 is: 870.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.84 : 1,556.28 = 630.50 : x
  2. Step 2: Convert to fraction form
    1,127.84/1,556.28 = 630.50/x
  3. Step 3: Cross multiply
    1,127.84x = 1,556.28 × 630.50
  4. Step 4: Simplify right side
    1,127.84x = 981,226.76
  5. Step 5: Solve for x
    x = 981,226.76/1,127.84
  6. Step 6: Final answer
    x = 870.01

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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.