Home / 1,710.16-2,561.80-1,188.40

Finding the Fourth Proportional to 1,710.16, 2,561.80 and 1,188.40

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Solution

The fourth proportional to 1,710.16, 2,561.80 and 1,188.40 is: 1,780.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,710.16 : 2,561.80 = 1,188.40 : x
  2. Step 2: Convert to fraction form
    1,710.16/2,561.80 = 1,188.40/x
  3. Step 3: Cross multiply
    1,710.16x = 2,561.80 × 1,188.40
  4. Step 4: Simplify right side
    1,710.16x = 3,044,443.12
  5. Step 5: Solve for x
    x = 3,044,443.12/1,710.16
  6. Step 6: Final answer
    x = 1,780.21

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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.