Home / 2,688.90-3,710.80-1,510.08

Finding the Fourth Proportional to 2,688.90, 3,710.80 and 1,510.08

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Solution

The fourth proportional to 2,688.90, 3,710.80 and 1,510.08 is: 2,083.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.90 : 3,710.80 = 1,510.08 : x
  2. Step 2: Convert to fraction form
    2,688.90/3,710.80 = 1,510.08/x
  3. Step 3: Cross multiply
    2,688.90x = 3,710.80 × 1,510.08
  4. Step 4: Simplify right side
    2,688.90x = 5,603,604.86
  5. Step 5: Solve for x
    x = 5,603,604.86/2,688.90
  6. Step 6: Final answer
    x = 2,083.98

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1.5x scale

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.