Home / 1,531.77-2,111.63-1,510.91

Finding the Fourth Proportional to 1,531.77, 2,111.63 and 1,510.91

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Solution

The fourth proportional to 1,531.77, 2,111.63 and 1,510.91 is: 2,082.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,531.77 : 2,111.63 = 1,510.91 : x
  2. Step 2: Convert to fraction form
    1,531.77/2,111.63 = 1,510.91/x
  3. Step 3: Cross multiply
    1,531.77x = 2,111.63 × 1,510.91
  4. Step 4: Simplify right side
    1,531.77x = 3,190,482.88
  5. Step 5: Solve for x
    x = 3,190,482.88/1,531.77
  6. Step 6: Final answer
    x = 2,082.87

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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.