Home / 1,531.77-2,113.93-1,158.15

Finding the Fourth Proportional to 1,531.77, 2,113.93 and 1,158.15

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Solution

The fourth proportional to 1,531.77, 2,113.93 and 1,158.15 is: 1,598.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,531.77 : 2,113.93 = 1,158.15 : x
  2. Step 2: Convert to fraction form
    1,531.77/2,113.93 = 1,158.15/x
  3. Step 3: Cross multiply
    1,531.77x = 2,113.93 × 1,158.15
  4. Step 4: Simplify right side
    1,531.77x = 2,448,248.03
  5. Step 5: Solve for x
    x = 2,448,248.03/1,531.77
  6. Step 6: Final answer
    x = 1,598.31

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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.