Home / 1,510.30-2,079.84-1,385.56

Finding the Fourth Proportional to 1,510.30, 2,079.84 and 1,385.56

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Solution

The fourth proportional to 1,510.30, 2,079.84 and 1,385.56 is: 1,908.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,510.30 : 2,079.84 = 1,385.56 : x
  2. Step 2: Convert to fraction form
    1,510.30/2,079.84 = 1,385.56/x
  3. Step 3: Cross multiply
    1,510.30x = 2,079.84 × 1,385.56
  4. Step 4: Simplify right side
    1,510.30x = 2,881,743.11
  5. Step 5: Solve for x
    x = 2,881,743.11/1,510.30
  6. Step 6: Final answer
    x = 1,908.06

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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.