Home / 1,510.95-2,079.76-1,117.29

Finding the Fourth Proportional to 1,510.95, 2,079.76 and 1,117.29

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Solution

The fourth proportional to 1,510.95, 2,079.76 and 1,117.29 is: 1,537.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,510.95 : 2,079.76 = 1,117.29 : x
  2. Step 2: Convert to fraction form
    1,510.95/2,079.76 = 1,117.29/x
  3. Step 3: Cross multiply
    1,510.95x = 2,079.76 × 1,117.29
  4. Step 4: Simplify right side
    1,510.95x = 2,323,695.05
  5. Step 5: Solve for x
    x = 2,323,695.05/1,510.95
  6. Step 6: Final answer
    x = 1,537.90

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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.